47' MLB Operator's Handbook Flashcards
Length overall
48’ 11” (w/ rubrails)
Hull length
47’ 11”
Hull beam
14’ 0” (w/o rubrails)
Beam overall
15’ 0” (w/ rubrails)
Freeboard
Bow 6’ 8”
Amidships 2’ 2” (deck recess)
Aft 7’ 1”
Draft
4’ 6”
Fixed height
18’ 6” (radar antenna)
Unfixed height
28’ 4” (HF antenna))
Engines
Twin Detroit Diesel Electronically Controlled (DDEC) 6V92TA
Rated HP
435 BHP at 2100 RPM
Reduction gear
Reintjes WVS 234 UP, 2:1 reduction
Fuel type
Diesel
Fuel capacity 100%
394 gal
Fuel capacity 95%
373 gal
Electrical generation
Dual alternators
Propellers
Fixed 4 bladed, 28” diameter, 36” pitch
Hoisting condition
40000 lbs
P/W capacity
5 gal
Compartments
Lazarette: Transom to 1 Engine room: 1 to 5 Survivors: 5 to 8 Aux: 8 to 10 Forward: 10 to 15 Forepeak: 15 to bow Enclosed bridge: 8 to 10 above main deck
Hull construction
5456 marine grade aluminum Side shell: 1/4" Bottom: 5/16" Chine plates: 3/8" Keel: 1/2"
Longitudinal frame spacing
11”
Transversal frame spacing
30”
Maximum personnel (including crew)
34 (180 lbs each)
Maximum seas
30’
Maximum breaking seas
20’
Maximum winds
50 kts
Range (cruising)
50 NM
Maximum RPM
2100 RPM
Maximum speed
25 kts
Cruising RPM
1850 RPM
Cruising speed
20 kts
Towing capacity (3 1/4” towline)
150 displacement tons
Towing capacity (2” towline)
50 displacement tons
Ice breaking capability
Light surface ice
Rotation of engine
Right hand
Coolant capacity
12 gallons
Lube oil capacity
5.5 gallons
Lube oil type
40 weight 2104D
Reduction gear ratio
2:1
Reduction gear oil capacity
7.1 gallons
Reduction gear oil type
30 weight MILSPEC 2104D or E
Reduction gear oil temperature
140 - 176 F
Reduction gear cooler raw water source
Engine raw water system
Reduction gear disengage pressure
58 - 66 psi
Superstructure extends from __ to ___
Frame 3
Frame 12
Mast platform is attached to the superstructure at ___ and ___
Frame 3
Frame 5
Deepest draft location
Propeller shaft strut extensions
Propulsion system configuration
U-drive
Each propeller shaft penetrates the hull between ___
Frames 3 and 4
Size of propellers
28” x 36” Four-bladed
Frame spacing
30”
How many primary watertight compartments?
7
Secondary watertight compartments
Forward deck lockers
Mast platform
Open bridge consoles
Buoyancy chamber
Forepeak access
20” QAWTH at Bulkhead 15
Forepeak ventilation
Natural ventilation with a 2” check vent
Contents of port stowage box
5 gallons 40 weight 2104 oil
1 gallon Tellus T-15 Hydraulic fluid
DC kit
Three sets of hearing protection
Contents of starboard stowage box
4 wool blankets Two pillows Pyro kit Bell with clapper Mouth operated reed horn Handheld spotlight 10 blood-borne pathogen kits (3XXL, 3XL, 2L, 2M)
Electric bilge pump capacity
33 gpm
Location of shore power main circuit breaker
Port shell plating at frame 9
Auxiliary Space bilge pump location
Frame 8 to starboard of keel
Forward bilge pump location
Frame 10 to starboard of keel
Forward bilge pump discharge
Starboard
Auxiliary space bilge pump discharge
Port between frames 8 and 9
What are on the top of the DC power panels?
Amperage and voltage meters
Where is the power converter for the 12-volt panel?
Mounted on the inboard side of the 24-volt power panel with the breaker below the meters
Auxiliary space ventilation
Forced ventilation
Auxiliary space vent fan and ducting are where?
Bulkhead 10 to starboard of the watertight door
Auxiliary space ventilation air intake ducting is where?
On bulkhead 8 to port of the watertight door
Auxiliary space ventilation exhaust fan switch is located where?
Bulkhead 10, above the 24-volt panel
Location of 12-volt power panel
Bulkhead 10, outboard of 24-volt panel
Location of 24-volt power panel
Bulkhead 10, to port of QAWTD
How much CO2 is in the fixed system?
Two 25-lb bottles
Location of fixed CO2 system CO2
Bulkhead 10, starboard of QAWTD
Location of DDEC Engine Room Interface Module and Electronic Gear Interface
Starboard shell plating between frames 8 and 9
Voltage of power receptacles
120-volt AC
Isolation transformer for the shore power system location
Bulkhead 8 to port of QAWTD
120-volt power panel location
Bulkhead 8 to port of the isolation transformer
What are the two battery systems?
Start and Service
Location of battery banks
Auxiliary space, directly over the keel
What are the batteries?
12-volt 8D cell marine batteries connected in series
How are the batteries connected?
In series
What does paralleling do?
Increases the amperage
What does connecting in series do?
Increases the voltage
Battery control and parallel switches are located where?
In the survivor’s compartment on Bulkhead 8, port of QAWTD
R/W valve, strainer, and pumps for the HVAC are located where?
At frame 9 to starboard of the battery box
EWRS and Horn Compressor system are located where?
On a pedastal on the outboard starboard side of the battery box
How many seats are in the survivor’s compartment?
5, 3 port, 2 starboard
How big is the water jug?
5 gallons
Where does the sink discharge?
Port side
Where is the stokes litter stored?
Port side above the windows
Where is the rescue swimmer pack stored?
Attached to the stokes litter
Where is the FAT kit stored?
Bulkhead 5 directly over the QAWTD to the engine room
How many sets of hearing protection are kept in the survivor’s compartment?
2
How big is the CO2 extinguisher?
5-lb
How big is the PKP extinguisher?
10-lb
Where is the loudhailer/intercom speaker in the survivor’s compartment?
Port side of bulkhead 8
Where is the CO2 mechanical actuator located in the survivor’s compartment?
Starboard of the engine room door on bulkhead 5
Where is the 30-second discharge delay control head?
Starboard side bulkhead aft of the seats
Where is the CO2 system light panel?
Above the QAWTD leading to the engine room
Where are the fuel e-stops?
Between the ladder leading to the aft deck and the engine room door
The vent ducting on bulkhead 8 passes through the survivor’s compartment for the HVAC in the enclosed bridge supplies makeup air for ____
Under the open bridge consoles
Where is the survivor’s compartment battle lantern mounted?
On the starboard bulkhead above the aft window
Where is the grounding wand located?
On the starboard bulkhead above the forward window
The fuel tank is located ___
Below the removable deck, centered on the keep between bulkheads 5 and 8
Capacity of fuel tank
394 gallons
What control the free surface effect in the fuel tank?
Baffles installed in the tank at frames 6 and 7
How many inspection covers are on the fuel tank?
3
Where is the R/G mounted?
Between frames 6 and 7
The R/G is coupled to the engine by a ___
Cardan shaft
The cardan shaft passes through ___
A water restricting seal on each side of the bulkhead
The propeller shaft is how big?
2.5”
The cardan shaft is connected to the ___ which connects to the reduction gear output flange
Stub shaft (spacer)
The shaft enters the stern tube at ___ and exits the hull ___
At bulkhead 5
Between frames 4 and 3
Watertight integrity is maintained between the shaft and the stern tube by a ___
PSS drip-less shaft seal
Where is the spare parts kit stowed?
The center gear space
How many GPM are the bilge pumps?
33
Where are the R/G space bilge pumps mounted?
At bulkhead 5 next to the fuel tank
Where do the R/G bilge pumps discharge?
Through bulkhead 5 outboard of the cardan shafts, and connects to the engine room bilge discharge piping
Where is the depth sounder?
Port of the fuel tank between frames 7 and 8
Where is the speed log transducer?
Starboard of the fuel tank between frames 7 and 8
Which direction are the engines facing?
Aft
What type are the alternators?
28-volt 220 amp Balmar alternator
Where is the R/W valve for the engines?
Opposite side of the keel from which it serves, between frames 4 and 5
The primary fuel filters are ___
30 micron
The primary fuel filters are located ___
Between frames 3 and 4 on the inboard girders
The secondary fuel filters are ___
Less than 10 micron
The secondary fuel filters are located ___
Inboard of both engines
Where are the fuel e-stops?
Between frames 4 and 5 on either side of the keel
MIM
Marine Interface Module
ECM
Engine Control Module
Where is the MIM and ECM
Mounted on the engine
The gear driven hydraulic steering pump delivers ___
6.5 GPM
A separate electrically driven hydraulic pump is mounted ___
Just above the chine and bulkhead 2
The separate electrically driven hydraulic pump supports the ___
Autopilot system
Hydraulic filter capacity
10 micron
The hydraulic fluid reservoir, filter, and cooler assembly are located ___
Starboard side shell plating between frames 2 and 3
___ is provided to cool the hydraulic fluid
R/W from the starboard engine
E/R bilge pumps are located ___
At bulkhead 5 and the other between frames 1 and 2
The engineer’s tool box is located ___
In a bracket on the starboard side aft deck, directly under the muffler
A standpipe for E/R dewatering is located ___
Inboard of the starboard girder, forward of bulkhead 1
The exhaust mufflers are cooled by ___
R/W
The mufflers are cross-connected to ___
Provide exhaust discharge when one port is underwater
What type of valve is used to cross-connect the mufflers?
Butterfly
The mufflers are located ___
On bulkhead 1 outboard of the girders
Exhaust discharges through the ___
Shell plating between frames 1 and 2 just above the waterline
The rudder posts are located ___ of the girders
Outboard
A ___ is placed in the top of each rudder post to provide a watertight seal against the rudder stock
Packing gland
A ___ connects the port and starboard tiller arms
Tie rod attachment
The manual steering rudder angle indicator is located ___
Outboard of the port rudder post
The electrical rudder angle indicator sending unit for the autopilot system is located ___
Inboard of the port rudder post
The autopilot course computer is located in ___
The enclosed bridge
The rudder angle indicators sense rudder position with ___
Tie rod attachment to the port rudder
The servo power cylinder of the hydraulic steering unit is mounted ___
Between the starboard tiller and the centerline
The ___ connects the power cylinder to the starboard tiller ___ of the tie rod attachment
Servo ram
Forward
The lazarette’s ventilation is ___
Naturally ventilated using a 2” check vent
The R/W standpipe for firefighting penetrates the hull at ___
A mid point between the shell plating and the starboard girder, just aft of bulkhead 1
The engine room dewatering pipe penetrates bulkhead 1 to ____
Starboard of the QAWTD
How many steps does the ladder from the open to enclosed bridge have?
4
How many steps does the ladder from the survivor’s compartment to the enclosed bridge have?
3
The emergency engine back up panel and controls are mounted ___
Directly over the throttles in the enclosed bridge
The enclosed bridge emergency air shut down pull cables are located ___
To port and starboard of the throttle control console
The enclosed bridge search light control is located ___
Aft of the engine throttles
The enclosed bridge CO2 activation handle is located ___
Aft and below the engine controls
The enclosed bridge has ___ windows
12
The four forward facing windows are ___
Heated glass
Two opening windows are located ___
Abeam of the helm chairs
The opening windows lock open using ___
A setscrew and slide mechanism
The opening windows secure using ___
A screw type dog
Two spring loaded hinged windows are aft of the ___
Stationary windows
EWRS
Emergency Window Release System
The function of the EWRS is ___ to allow ___
To automatically release the windows in a rollover situation
The free transfer of water
The EWRS can be manually activated using ___
The CO2 pull handle mounted on the overhead directly above the throttle control station
The side and aft windows in the enclosed bridge are fitted with ___ to help control ___
12-volt blowers
Condensation
The chart table is located __
On the port side, adjacent to the forward console
The chart table stows ___
Vertically adjacent to the bulkhead
The chart table extends ___
Out over the port helm chair
A chart bag with navigation equipment may be hung ___
On the port bulkhead next to the chart table
The CO2 system actuator cylinder is filled with ___
Nitrogen
The enclosed bridge HVAC unit is located ___
On the overhead above the starboard bolster seat
The HVAC controls in the enclosed bridge are located ___
On the starboard bulkhead
The bilge pump alarm panel and controls are mounted ___
To starboard of the aft facing window on bulkhead 8
The bilge pumps may be in what modes of operation?
Off/Auto/On
The normal mode for the bilge pumps is ___
Automatic
The bilge alarms circuit is connected to the ___
Boat horn
A selector switch on the bilge alarm panel puts it in which two modes?
Moored
Underway
The navigation light controls are located ___
To port of the QAWTD on bulkhhead 8
What navigation light modes are available?
Anchor light, running lights, towing astern (200M or less), and inland alongside towing
The HF radio is mounted in the enclosed bridge ___
On the starboard bulkhead at frame 9
Binoculars are stowed where in the enclosed bridge?
In a rack on the starboard bulkhead forward of the HF radio
The enclosed bridge 5-lb CO2 extinguisher is stowed ___
On the port side of bulkhead 8 next to the navigation light panel
The enclosed bridge 10-lb PKP is stowed ___
On the starboard side superstructure just in front of bulkhead 8
The enclosed bridge battle lantern is mounted ___
On the starboard outboard side of the overhead just forward of the aft window
A ___ is attached to the handrail from the open bridge to the aft deck
Safety line
The port steering station has ___ for helm control
An electric follow-up jog lever
The rudder angle indicator displays in ___ increments
One degree
A ___ is on the underside of the open bridge console to allow drainage and prevent water intrusion in the event of a rollover
1” check ball
The starboard steering station has a ___ for helm control
Steering wheel
Deck light switches and horn button are located ___
Inboard of the helm unit
The searchlight control panel on the open bridge is located ___
Above the helm unit
A ___ extends across the superstructure in front of the consoles
Clear lexan windscreen
In the open bridge the magnetic compass is located ___
Between the windscreen and the starboard steering station
The helm chairs can be rotated ___, and locked into position every ___
360 degrees
90 degrees
The jump seats can ___
Be locked into a vertical position to provide more deck space
In the open bridge, the binoculars are stowed ___
In a rack under the starboard steering station console
The mast platform is ___
A buoyancy chamber that aids in re-righting the boat
What is located on the mast platform?
Radar antenna, DGPS antenna, blue light, forward and aft fixed spot lights, and aft deck working lights
The mast tower can be lowered using ___
Block and tackle rig attached to the tow bit
What is located on the mast tower?
Anchor light, upper and lower masthead light, upper and lower aft facing tow lights, stern light, VHF-DF antenna, and search light
A ___ is located on the centerline at the bow
Hinged bullnose with locking pin and lanyard
Where are the bitts located?
Between frames 16 and 17
Frame 12
Between frames 8 and 9
Between frames 2 and 3
Chocks are located ___
Frame 14
Between frames 9 and 10
Between frames 3 and 4
Between frames 1 and 2
The handrails on the sides of the superstructure extend start between ___ and end between ___
Frames 10 and 11
Frames 3 and 4
The hand rail that runs transversely across the bow is at ___
Frame 11
The taftrail runs from ___
The transom to frame 3
The tow bitt is located ___
Just aft of frame 2 centered over the keel
The tow bitt is ___ high
30”
___ run aft from the tow bitt post to the deck at the intersection of bulkhead 1
Tow post stiffeners
A ___ in the engine room strengthens the deck
Stanchion
Two tow reels are located ___
Recessed in the port aft corner of the superstructure
The upper tow reel carries ___
300’ of 2” DBN line
The lower electrically powered tow reel carries ___
900’ of 3 1/4” DBN line
An electric motor is mounted internally in the ___ reel only
Lower
The tow reel control switch is located ___
Above the upper tow reel
The tow real breaker switch and power reset button are located ___
Inside the aft survivor’s compartment door
The hand crank for the tow reels is secured ___
To the port side of the tow line reels
The hand crank can be used on which tow reel?
Either
How many deck lights illuminate the deck?
8
The HF-FM antenna is located ___
On the port side of the superstructure at frame 4
The HF-FM antenna can be ___
Lowered
Port and starboard running lights are located ___
On top of the enclosed bridge between frames 9 and 10
What size are the ring buoys?
30”
Where are the ring buoys mounted?
Port and starboard at frame 6 on the sides of the open bridge handrails
The floating electrical marker lights are located ___
Just forward of the ring buoys
Rescue line throw bags are mounted ___
On the open bridge handrails
A diver’s knife is mounted ___
On the port stanchion of the ladder to the aft deck
Boat hooks are mounted ___
On the sides of the superstructure
What type are the boat hooks?
8-foot telescopic aluminum, with hull numbers and skiff hook attachments
The buoyancy chamber at the stern of the boat is ___ high
30”
A recess on the starboard side of the aft buoyancy chamber contains ___
The P6 pump can
The aft buoyancy chamber is divided into ___ watertight deck boxes
3
Two ___ for the P6 are on the forward face of the aft buoyancy chamber
Suction standpipes
The outboard P6 standpipe is for ___
R/W suction
The inboard P6 standpipe is for ___
Engine room dewatering
The port aft deck box contains ___
200’ of 2 1/4” DBN drogue/grapnel line, two drogues (small/large), one roll of marlin, two heaving lines, chafing gear/assorted shackles
The center aft deck box contains ___
DBN bridle, wire/kevlar bridle, block and tackle kit, skiff hook with pendent, and a #4 grapnel hook
The starboard aft deck box contains ___
Suction hose for P6 to standpipe, hose with vari-nozzle
What size is the P6 suction to standpipe hose?
6’ x 3”
What fitting does the P6 suction to standpipe hose use?
Sized camlock fitting
How long is the firefighting discharge hose?
50’
A deck locker is on each side of the forward superstructure between frames ___
10 and 11
The port deck locker contains ___
19-lb Fortress anchor (Danforth type) mounted in bracket, 2-lb mud fluke, reel with 300’ of 2 1/4” DBN anchor line, 9 feet of 3/8” stainless steel chain attached to the anchor and line with 3/8” stainless steel shackles and swivel moused as ground tackle, and a T-handle for opening the forward compartment
The starboard deck locker contains ___
4 fenders, 8 alongside lines, and the window washer fluid tank
The P6 fire fighting capability is intended only to provide ___
Personnel protection or to aid in removing survivors from a burning platform
The major components of the propulsion system are ___
The two main engines, the cardan shafts, the R/G’s configured for U-drive, and the the propellers and shafts
What type of engines does the 47 MLB have?
Two Detroit Diesel Electronically Controlled, 6 cylinder, 2 stroke, turbo-charged, after-cooled marine diesel engines (DDEC 6V92TA)
Engine rating
435 HP at 2100 RPM
Then engines rotate ___ as viewed ___
Right hand
Looking aft from the front of the engine
Coolant capacity
12 gallons
L/O capacity
5.5 gallons
L/O type
40 weight 2104D
A ___ controls all engine combustion functions
Computer
The engines maintain ___ under ___ and limits maximum and minimum ___
Constant RPM
Variable loads
RPM
A ___ couples each engine to its R/G
Cardan shaft
The Cardan shaft has a ___ that allows for expansion and contraction
Spline joint
A ___ is mounted to the engine flywheel for the Cardan shaft
Vulcan coupling
The Vulcan coupling is made of a ___ and accepts the ___
Rubber material
Torsional twist applied to the Cardan shaft when the engine accelerates
___ at the end of the Cardan shaft accepts any misalignment
U-joints
The Cardan shaft passes through a ___ on each side of ___
Water restrictive rubber seal clamped
Bulkhead 5
What type of R/G does the 47 MLB use?
Reintjes WVS 234 UP Marine Reduction Gears
Where are the R/G’s located?
Port and starboard of the fuel tank between frames 6 and 7
The R/G is a ___ unit
U-drive
R/G ratio
2:1 forward and reverse
___ mounted at the gear box controls gear function as affected by the DDEC system
An electronically actuated control valve
R/G L/O capacity
7.1 gallons
R/G L/O type
30 weight 2104D or E
A temperature regulating valve and gear oil cooler for the R/G maintain oil temperatures between ___
140 - 176 degrees F
The R/G cooler is supplied with R/W from ___
The engine R/W system
R/G disengaged pressure is normally ___
58 to 66 psi
R/G clutch applied pressure is normally ___
230 to 290 psi
If apply pressure is lost, the R/G is fitted with a ___
Come-home device
The come-home device is engaged by ___
Mechanically locking the clutch together with set screws
In the event of electronic control failure of the R/G, the control valve can be ___
Operated manually
Each propeller shaft is ___ in diameter
2 1/2”
Each propeller shaft is constructed of ___
CRES AQUAMET 22
The reduction gear end of the shaft is fitted with a ___ that is secured to the shaft using ___
Flange
One center bolt and lock wire (.0625)
A ___ connects to the R/G output flange and is secured with ___
Stub shaft
1/2” bolts
A ___ is between the stub shaft and the prop shaft to ___
Micarta shaft isolator
Protect the gear in the event of grounding and electrolosis
The stern tube starts at ___
Frame 5
The prop shaft penetrates the hull between frames ___
3 and 4
A ___ encompasses the shaft
PSS drip-less shaft seal
The shaft is supported aft by a ___
Stainless steel strut with a strut extension to protect the propeller
There are ___ installed between the strut and prop on each shaft facing inboard
Spur line cutters
The propeller is a ___
4-bladed, 28” diameter x 36” pitch
A computerized electronic engine control, governing and fuel injection system that replaces mechanical controls
DDEC
There are how many major components to DDEC?
7
ECM
Electronic Control Modules
The ECM is mounted ___
Directly on the engine
Each ECM contains the microprocessor that ___
Continuously monitors and controls engine performance and calibration
The ECM receives input from ___
Sensors located on the engine
The ECM provides direction to the ___
Electronic fuel injection system
Each ECM also contains a backup ___
Microprocessor
The ECM performs 7 functions
Engine governing Cold start fueling and timing Engine protection and diagnostics Injection timing Rated speed and power Sensor calibrations Smoke control
The DDEC system is very sensitive to ___
Current/voltage fluctuations and surges
The ___ replace the traditional fuel injectors with an electronically controlled solenoid valve and straight plunger on each injector
EUI
EUI
Electronic Unit Injectors
___ mounted on both engines provide the interface between the boat’s control systems and the ECM
MIMs
MIMs
Manufacturers/Marine Interface Modules
The MIM features a ___ which allows the engineer or service personnel to connect the ___ to the engine for troubleshooting
Diagnostic connector port
DDEC diagnostic reader
Central processor of the control systems (throttles) on the boat
ERIM
ERIM
Engine Room Interface Module
The ERIM is located in the ___
Auxiliary Machinery Compartment
The ERIM accepts signals from the ___
Three control stations on the boat
The ERIM commands the engines through the ___ to operate at ___
MIMs and ECMs
The proper speed
The ___ directs the clutch actuators to control direction of propulsion
ERIM
Receives signals from the throttles and the throttle control buttons
CSIM
CSIM
Control Station Interface Module
How many CSIMs are on the boat?
3
The CSIMs are located ___
In the enclosed bridge, two in the overhead, one in the main console port side under the main kick plate
The CSIM sends the information encoded into command signals to the ___
ERIM
The LCD displays mounted in the bridges
EDMs
EDM
Electronic Display Module
The EDM receives information via a connection to the ___
CSIM
Take electronic signals from the ERIM and actuate the R/G clutches
EGIMs
EGIM
Electronic Gear Interface Module
The EGIMs are located in ___
The Auxiliary Machinery Compartment underneath the ERIM
The EGIM receives its signals from the ___
ERIM
How many R/W systems are on the boat?
2
What do the water systems provided cooling for?
The propulsion system the the HVAC system
Five functions of the primary R/W system
Maintains F/O temperatures below 90 degrees F
Removes heat from the engine coolant
Removes heat from the R/G L/O
Removes heat from the steering system hydraulic oil
Provides cooling and quieting for engine exhaust
Each engine’s R/W valve is located ___
On the opposite side of the keel between frames 4 and 5
The R/W strainer is a ___
4” duplex
The R/W pump has a flow rating of ___
67 GPM
From the R/W pump the water flows to the ___
Fuel cooler
The fuel cooler maintains temperatures below ___
90 degrees F
From the F/O cooler water is piped to the ___
Engine heat exchanger
On the outboard side of the engine R/W flow is divided to ___
Through bulkhead 5 to the R/G L/O cooler and shaft seal
The second restricted through a 1” restrictor plate and goes to the muffler
On the starboard side, a separate branch of the R/W provides cooling for the ___
Steering system hydraulic fluid
Water to the shaft seal provides ___
Sealing and cooling
After passing through the R/G L/O cooler, the R/W flow ___
Re-enters the engine room and branches off to the de-icing valve and the other discharges to the muffler
In the water-cooled muffler, R/W ___ the exhaust and is ___
Cools and quiets
Discharged over the side via exhaust ports
The Mufflers are cross-connected to ___
Prevent back pressure if one exhaust port is submerged
An isolation valve is installed on the cross-connect to ___
Prevent internal condensation in the event of single engine operation
The cooling system is filled with ___
A 50/50 mixture of Power Cool and distilled water
The coolant passes along the heat exchanger, giving up its heat to the ___
R/W
From the heat exchanger, the coolant is ___
Drawn into the pump
The J/W pump has two outlets: One flows to the ___ and the other directly to the ___
Right bank thermostat housing
After-cooler
From the right bank thermostat housing, J/W flows to the ___
L/O cooler
J/W maintains a L/O temp of ___
200 to 250 degrees F
J/W can bypass the L/O cooler and go directly into the ___
Block
The J/W bypassing the L/O cooler to the block is dependent upon ___
The temperature of the L/O as regulated by a thermostatic valve
From the L/O cooler, J/W flows into the ___ absorbing heat from ___
Block
Combustion around the cylinder liners
From the cylinder lines, J/W flows into the ___ where the ___ is cooled
Heads
Fire deck
After the heads, the J/W ___ and enters the ___ where a ___ is housed
Joins the after-cooler discharge
Left bank thermostat housing
Thermostatic valve
The thermostat that regulates the temperature of the coolant flowing through the block is set at ___
170 degrees F
The thermostat regulates the temperature of the coolant flowing to the block by ___
Opening or closing the discharge passage to the heat exchanger
When the engine is warming up, the thermostat will ___
Close the passage to the top of the heat exchanger and open the passage directly to the suction side of the pump
Coolant also flows from ___ to the after-cooler mounted in the engine air box below the blower
One discharge side of the pump
Charged air from the blower and turbo charger passes along the ___
After-cooler
The charge air after-cooler reduces air temperature to ___
100 degrees F
Why does the after-cooler reduce the charge air temp?
Cold air is denser and will hold more oxygen for combustion
From the charge air after -cooler, J/W is piped to the ___
Left bank thermostat
What type off L/O system do the engines have?
Closed-circuit, pressurized
Normal operating range of engine L/O
49 to 70 psi
A ___ type oil pump is mounted on the ___ and is driven by the ___
Scavenging
Two forward main bearing caps
Gear train from the forward end of the crankshaft
The scavenging oil pump is actually ___
Two pumps in a single casing
The aft or scavenging pump moves oil ___
From the back of the oil pan to the front over a baffle
The front or main oil pump takes suction from ___
The front of the oil pan through the intake screen and pipe, then into the pump where it is pressurized
From the main pump, the oil goes to a ___ in the ___ to the ___ and to a ___ mounted on the ___
Short gallery Cylinder block Oil cooler adapter plate Spring-loaded pressure relief valve Cylinder block
The spring-loaded pressure relief valve discharges excess oil to ___ when the pressure exceeds ___
The oil pan
105 psi
The oil flows from the oil cooler adapter plate to the ___. Then it flows though the ___ and then back into the ___
Full-flow oil filter
Oil cooler
Cylinder block
The L/o filter is ___
30 micron
From the block a ___ and ___ carry oil to the ___ through the middle of the block
Short vertical oil gallery
Short diagonal oil gallery
Main longitudinal oil gallery
___ are provided to bypass the oil filter and oil cooler if either become plugged
Valves
A ___ located at the end of a ___ stabilizes L/O pressure at all speeds regardless of the oil temperature
Pressure regulator valve
Vertical oil gallery
The regulator valve opens when the L/O pressure exceeds ___ and discharges back to the ___
62 psi
Oil pan
The vertical oil gallery is located ___
At the front of the cylinder block on the side opposite the oil cooler
The flow of oil through the main gallery:
Pressurized oil flows from the main oil gallery through drilled passages to each main bearing.
Then to an adjacent pair of connecting rods through grooves in the upper main bearing, lower connecting rod bearing and drilled passages in the crankshaft. The rifle drilled connecting rods carry oil from the connecting rod bearings to the piston pin bushing.
The engines are ___-stroke
2
The air flow that pushes exhaust gases through the combustion chambers is call ___
Scavenging air
Air is forced into the engine by an air pump called a ___
Blower
The blower is driven through ___
The gear train
The blower supplies air to a reservoir in the engine called ___
An air box
The air intake system uses a ___ to supply enough air to produce 435 HP
Turbocharger
A turbocharger is an air pump driven by the ___
Expelled combustion gases from the cylinders
The turbocharger RPM corresponds to ___
The rate of expansion
The turbocharger turbine is connected by a shaft to a ___
Compressor wheel
The blower generates ___ psi
About 5
The turbocharger generates ___ psi
20 or more
What allows the turbocharger to bypass the blower to avoid the restriction it would cause?
Air flow valves installed in the blower housing that open an air flow path around the blower compressor lobes
The valves that remove the restriction of the blower from the air flow are called ___
Oval blower bypass valves
After the blower, air flows to ___
The after-cooler
After the the after-cooler, air flows to the ___
Air box
Each exhaust subsystem consists of a riser assembly attached directly to the engine’s ___
Turbocharger outlet adapter
Twin wet exhaust lines are located ___
Aft between frames 1 and 2
Through the exhaust gas muffler, gases ___
Percolate upwards through the center of the water chamber
The exhaust mufflers ___ water in the event of a rollover to prevent ___
Retain
Back drainage into the engines
The F/O system is made of ___ subsystems
3
The F/O tank capacity at 100% is ___
394 gallons
Fuel capacity at 95%
373 gallons
Fuel suction is drawn at ___
A point 2” from the bottom of the tank at frame 6
The fuel pickup has a ___ to provide suction in the event that the boat capsizes
Bonnet
____ are installed at frames ___ to control free surface effect in the fuel tank
Baffles
6 and 7
Fuel flows from the tank to ___
F/O emergency cut-out valves
The F/O emergency cut-out valves are ___ and actuated by ___
Spring-loaded
Pull cables from the starboard side of the engine room door in the survivor’s compartment
From the cut-out valves the fuel flows through the ___
Fuel filter service valve
From the fuel filter service valve the fuel flows through the ___
Primary F/O separator
The F/O separator is a ___ type filter with a ___ rating
Spin-on
30 micron
The primary F/O separator is considered a ___ filter in that it ___ and ___
Duplex
Removes particulates
Separates water
A ___ at the bottom of the F/O filter is used for ___
Removable metal bowl
Draining water and sediment
Fuel travels from the primary F/O filter into the ___
F/O pump
The fuel pump is ___ driven off of ___
Gear
The front of the blower
The F/O pump has an internal relief valve that opens at ___ to protect the pump from ___
62 psi
Overpressurization
The F/O pump is also outfitted with a ___ to prevent seal failure in the event that the engine is counter-rotated
Return check valve
Fuel flows from the pump under pressure through the ___ to the ___
ECM cooler
Secondary 2-4 micron filter
After the ECM fuel flow splits to the ___
Fuel injection system in each cylinder head
F/O travels through the cylinder heads for ___
Injecting, cooling the fire deck, cleaning and lubricating the fuel injectors
___ of the fuel flow returns back to the tank
80%
From the heads, the fuel flow enters a ___ where the split flow is brought back together and flows through the ___
Manifold
Fuel cooler
Fuel cools below ___ in the fuel cooler to prevent a ___
90 degrees F
Loss of power due to heat buildup
On the output side of the fuel cooler there is a ___
0.080” restricted orifice
The orifice on the fuel cooler provides ___
Constant back pressureon the system
From the fuel cooler, fuel flows to the ___ and through a ___
ECM cooler plate
Check valve
Fuel flow from the ECM cooler plate then joins ___, where it passes through a ___ just aft of ___ and back to the ___
The returned fuel from the other engine
Common return check valve
Bulkhead 5
Tank
The relief check valve to tank return prior to the fuel pump is set at ___
10 psi
The 47 MLB uses a Manual Servo Steering System that interacts with ___
A power assist system
The steering system uses ___ hydraulic fluid
2 gallons of Tellus T-15
The manual steering system serves as the boat’s ___ steering
Emergency
If the Manual steering system fails, the boat can be steered using ___
The engines
The helm unit is ___
An axial piston pump
The helm unit displaces ___ per revolution
2.3 cu/in of fluid
As the helm wheel is turned, it pumps fluid from ___ to ___
One side of the servo ram
The other
The steering fluid reservoir assembly in the engine room provides ___ and is ___
Makeup oil
Closed to the atmosphere
Proper system operation required that the steering fluid reservoir be ___ full
1/2 - 3/4
The head pressure in the steering fluid reservoir should be ___
20 to 30 psi
A gauge at the steering fluid reservoir displays ___
Pressure
The manual steering operates as a ___ by ___
Standard hydraulic system
Supplying oil to either side of the servo cylinder assembly in the lazzarette
By responding directly to helm movement, the connected rudders move with ___
Little effort on the steering wheel
When the jog levers are used, an ___ is sent to the ___ which ___
Electronic signal
Control
Pumps fluid to the appropriate side of the servo ram
When energized, the autopilot system sends signals to the ___ to control the ___
Autopilot pump
Operation of the servo ram
The power assist system operate in direct response to ___ to give very high response steering with minimal effort
The manual steering system
___ driven by the engines provide ___ in the power assist system
Two hydraulic pumps
Fluid flow
From the engine driven hydraulic pumps, the fluid flows to ___ that controls ___
The pump relief/flow control valve
System pressure including the manual helm steering circuit
In operation, pressure is only developed in the power circuit to bring about ___
Changes in rudder position
Under steady conditions, the power pumps circulate oil freely in the ___
Power circuit
The fluid enters the appropriate side of the port and starboard ___ in the ___ in the lazarette
Power cylinder
Servo/power cylinder unit
The servo cylinder commands the ___ to follow its movement and thus operate in ___
Power cylinder
Direct response to helm movement
An important function of the steering control assembly is that is provides ___ if the power pump flow is lost or interrupted
Automatic return to the manual helm steering
The hydraulic steering system reservoir assembly is mounted on ___
The starboard shell plating between frames 2 and 3
The hydraulic steering system reservoir contains ___ of hydraulic fluid
1 gallon
The hydraulic steering system performs 4 functions for the system
- Supplies oil for the two-engine drive power pumps
- A supply of filtered oil for both the helm unit and the autopilot pump assembly
- Cooling to keep the system operating within parameters
- Continuous filtering of oil in the power asist circuit
Hydraulic fluid filter rating
10 micron
Hydraulic fluid cooling is supplied from ___
The R/W system
Heats, cools, and ventilates the survivor’s compartment and enclosed bridge
HVAC system
The control unit for the enclosed bridge HVAC is located ___
On the starboard bulkhead
The control unit for the survivor’s compartment HVAC is located ___
Just inboard of the ladder leading to the aft deck
The HVAC system is cooled by ___
A R/W system
The intake, valve, and simplex strainer for the HVAC R/W system are located ___
TO starboard of the keel in the auxiliary machinery compartment
Whay type of strainer does the HVAC system have?
Simplex
___ pump water through hoses to the HVAC compressors
Two electrically powered R/W pumps
The R/W valves must be open to use the HVAC system in the ___ mode
Cooling
Every compartment on the 47 MLB is ___ ventilated
Naturally
The 47 MLB electrical system includes ___ power distribution systems
Both AC and DC
AC power is provided from ___
Shore power
DC power is provided from ___
4 engine-driven, 220 amp Balmar alternators and two banks of 8D marine type AGM batteries
From the alternators the power passes through ___
Voltage regulators
From the voltage regulators, power passes through ___ and then on to ___
Battery disconnect switches
The batteries
All four alternators are outfitted with ___ to prevent an overload of one alternator
A load sharing device, the center fielder
Green LED indicator lights are mounted on port and starboard engine room gauge panels, which are energized whenever ___
Each respective alternator is producing voltage
The power is distributed through ___
24 VDC and 12 VDC power panels
The batteries installed on the boat consist of ___
Two banks of 12-volt 8D marine type AGM batteries mounted in a drip proof laminated fiberglass box with a vented top to prevent accumulation of charging gases
Each battery bank consists of ___
Two 12-volt 8D marine type AGM batterys connected in series
___ Permits each battery bank to be disconnected from its intended starting or service load
Battery disconnect cut-out switch panel
Under normal conditions, the battery banks operate ___
Independently
The two banks can be ___ in the event that one of them is not providing enough voltage
Paralleled
Battery charging is performed in port by ___
An AC powered battery charger
Battery charging is performed underway by ___
Four engine-driven Balmar alternators that generate DC power
Three power panels are installed on the boat
120 VAC
24 VDC
12 VDC
___ panel houses breakers for the two Victron inverters
120 VAC
The Victron inverters are ___ amp
40
The power receptacles are ___ amp with ___
15
Ground fault protection
The HVAC units are ___ amp each
40
Engine hot starts are ___ amp each
30
The 120 VAC panel houses breakers for ___
The inverters, power receptacles, HVAC units, and engine hot starts
When AC alternator power is being used, the voltmeter and amp meter on the 120 VAC panel will read ___, power is present at the ___ circuit breakers. Indication of power is on the ___
0
HVAC circuit breakers
Seapower remote status panel
The 12 VDC panel receives its power from ___
The converters
If the 12 VDC power supplies trip off line, ___
Secure the electronics and allow power supplies to cool
Reasons the 12 VDC power supples may trip off-line
- Heat in Aux may get hot enough to prevent heat from the converters to dissipate
- A thermo switch will secure the units when overheated
- One unit may be inoperative and the other is carrying the load, which will overload the functioning unit
Secure the service batteries when securing the start system cutout switch or when removing power cables from the starter because ___
A 24-volt potential exists on the negative cable due to the common ground of the two systems
Why is it important that the EWRS provides for the free transfer of water?
Because the trapped water may affect stability
___ provides for automatic or manual opening of the port and starboard aft corner windows on the enclosed bridge
EWRS
___ trigger the opening of the aft corner windows
Water sensors mounted on the port and starboard bulkheads near the overhead
The EWRS windows are mounted on ___ and are held closed and locked down by ___
Spring-loaded hinges
Sliding lock assembly
___ provides charge air to the window release system
An air compressor and reservoir assembly
The EWRS can be tested periodically by ___
Pressing the EWRS release test switch mounted just forward of the starboard window
The EWRS can be re-armed by ___
Resetting the test switch, pressing the reset button next to each window, closing the windows and securing the slide locks
The CO2 fire supression system is used for firefighting in the ___
Engine room
The CO2 system can be activated from three locations
The enclosed bridge, survivor’s compartment, and locally at the bottle
The local CO2 activation is ___
Removing the locking pin and manually rotating the activation lever on the control head
The remote activation stations puncture a ___ which charges the ___
Nitrogen cylinder
Activation piping
The CO2 activation system releases a ___ on the ___ of the CO2 storage containers
Pressure switch
Control head
Once the CO2 has been released, the first stage is ___
The discharge manifold lines are pressurized, the siren, pre-discharge warning light, pre-discharge strobe light, and the engine stop solenoids are activated, and the 30 second delay is activated
The purpose of the 30 second delay is to ___
Allow time for the strobe and siren to alert personnel to evacuate
Ca the 30 second delay be bypassed?
Yes
After the 30 second delay, CO2 will ___
Be released, the engine room air damper and red CO2 discharge light will be lit
The boat is outfitted with ___ 33 GPM submersible bilge pumps
7
The bilge pump discharge line is fitted with ___
An in-line check valve mounted in a horizontal position
The bilge pump discharge hose is attached to a through hole fitting with ___
Two hose clamps
The level switch is above the height of the bilge pump to avoid ___
Discharging oil floating on the bilge water
The bilge alarm circuit is connected to the ___
Boat horn
It will require about ___ of water in the bilge space to activate the bilge pump when in auto
10”
The separate emergency method of erergency dewatering of the engine room is through use of ___
The P6 connected to the dewatering standpipe
How many bilge flooding alarm sensors are on the boat?
6
Which bilge pump does not have an alarm sensor near it?
The forward engine room bilge pump
The bilge alarms sensors are located ___
About 5” below the bilge pump activation sensors
