Questions Flashcards
Underwater, objects appear to be % larger
30
In what order does color start filtering out in water
Red, Orange, Yellow, Green, Blue
What are thermoclines
Different layers of water at different temperatures
How fast does sound travel in the water
4,921 feet per second
What is Conduction
Conduction is the transmission of heat by direct contact. Because water is an excellent heat conductor, an unprotected diver can lose a great deal of body heat to the surrounding water by direct conduction
What is Convection
Convection is the transfer of heat by the movement of heated fluids
What is Radiation
Radiation is heat transmission by electromagnetic waves of energy. Every warm object gives off waves of electromagnetic energy, which is absorbed by cool objects. Heat from the sun, electric heaters, and fireplaces is primarily radiant heat
A diver will start to become chilled when the water temperature falls below a seemingly comfortable
70°F
GFIs are required when line voltage is above
7.5 VAC or 30 VDC
GFIs shall be capable of tripping within ___ milliseconds after detecting a maximum leakage current of ___ milliamps.
20 milliseconds, 30 milliamps
Deploying Standby Diver as a working diver:
- Surface-supplied, no decompression dive 60 fsw or more
- Same job/location
50 Foot rule
Diving within 50 feet of an active sea suction (located on the same side of the keel) that is maintaining a suction greater than 50 gpm or more, is not authorized unless considered as an emergency repair and is authorized by the CO of both the RA and tended vessel.
Diving on ships in a nest:
-Outboard ship must fly code alpha
-All suctions within the 50’ path of divers and work item must be tagged out on both ships
-Both ships pass the word “There are divers working
Diving within active ICCP:
-The appropriate zone of the ships ICCP system must be secured, tagged out, and confirmed secured before divers may work on an ICCP device
-Divers working within 15 feet of an active system must wear a full dry suit, unisuit, or wet suit with hood and gloves.
Diving with active sonar:
-Wet- Suit Hooded - Start 600 yds. and move in to diver comfort
-Wet- Suit Unhooded - Start 1000 yds. and move in to diver comfort
-Helmeted - Start 3000 yds. and move in to diver comfort
Diving at night:
-Notify port ops due to sonar testing
-Ships light should be Red-White-Red
What is ship class EMORY S. LAND designation and type
Designation - AS
Type - Submarine Tender
UWSH - what Chapter is Index
CH 1
UWSH - what Chapter is General Info
CH 2
UWSH - what Chapter is Propellers
CH 3
UWSH - what Chapter is Auxillary Propulsion unit
CH 4
UWSH - what Chapter is Masker Emitter Belts
CH 5
UWSH - what Chapter is Submarine Sonar Systems
CH 6
UWSH - what Chapter is Non-Destruction testing
CH 7
UWSH - what Chapter is Secondary Propulsion Motor
CH 8
UWSH - what Chapter is Sonar Rubber Domes
CH 9
UWSH - what Chapter is Diver Tools
CH 10
UWSH - what Chapter is Wet/Dry Chamber Welding
CH 11
UWSH - what Chapter is Controllable Pitch Propellers
CH 12
UWSH - what Chapter is Shaft Laminations
Ch 13
UWSH - what Chapter is CSA PODS
CH 14
UWSH - what Chapter is Protection Sleeves
CH 15
UWSH - what Chapter is Cofferdams
CH 16
UWSH - what Chapter is Inspections
CH 17
UWSH - what Chapter is Propulsion bearing
CH 18
UWSH - what Chapter is Cathodic Protection
CH 19
UWSH - what Chapter is Painting/ Fairing Compounds
CH 20
UWSH - what Chapter is FIN Stabilizer
CH 24
UWSH - what Chapter is Pollution Prevention
CH 28
UWSH - what Chapter is Submarine Procedures
CH 29
Types of Propellers
-Solid
-Built Up
-CPP
Propellers - Pilgrim Nut
Forces hydraulic fluid into nitrile tire pushing ring outward against backing plate
Propellers - Charleston Gear
Hydraulic ram pushes against strongback seated on prop. nut
Cosmoline
MIL-C-11796
Hydrolube
MIL-L-21260
Masker Emmitter Belt - continuous length of
90/10 CuNi pipe
3/64” holes
Cleaning Masker Emmitter belt with only
-Butterworth Zero thrust hydroblast gun
-Cannot use more than 85 min/24hrs due to noise.
- Start from waterline and move to the keel
What type of rubber are sonar domes made of
NOFoul® rubber
Sonar dome inspection - Water temperature less the or equal to
60F and or high turbidity you need a cofferdam for repairs
Hytorq Bolts
Hex head, Hex key, 12 point
Morgrip bolts
Utilizes bolt elongation to set torque
Plugs - Wooden DC
Max 3-4” protrusion
Flat Patch
A single plate of metal or wood
Box patch
A flat patch with sides with open side facing the hull
Beaver Dam
Series of wooden wedges, used on CG stbd side stern tube.
Fat rope
Large bintsuke wrapped line
Material for Cofferdam on ships
Min. 1/4” 5000 series Aluminum, 1/4” mild steel, 1” Marine Grade plywood
Material for Cofferdam on Subs
Min. 1/8” 5000 series Aluminum, 16 gauge stainless steel
Appendix C for cofferdams
Patch and Plugs inspection
Appendix D for cofferdams
Patch and Plug installation
Appendix G for cofferdams
Ships responsibilities for patch installations
Bintsuke Recipe
——————–Summer———Winter———
Cooking oil. 5 gal. 5 gal
Rosin (pitch). 25 lb 30 lb
Beeswax. 25 lb. 25 lb
Tallow 2 lb 3 lb
Parafin 2 lb 2 lb
Cheesecloth 6ft x 1 ft strips
Non Invasive Inspections
Requires no disassembly
Invasive Inspections
Requires some disassembly
Level 1 Inspections
Non-Invasive of entire hull appendages
Level 2 Inspections
System specific, Non Invasive, Deficiency discovered during level 1 or problem reported by ship
Level 3 Inspections
System Specific, Invasive
Propulsion Bearings Lubrications
Boundary - Full Contact
Mixed Film - Speed increases creating film
Hydrodynamic - Seawater drawn in, full separation of surfaces
Fairwater measured at
3, 6, 9, 12 o’clock positions
Propulsion bearings clean out with
Hydro lance
Cathodic Protection - Divers working within ___ feet active ICCP wear full _____
15’
Wet/ Dry, Hood, Gloves, Booties, Comms
Anode
Platinum-coated tantalum wire rod woven through insulating glass reinforced polyester holder 2,4,8’ lengths, installed in sets of 2, equal in length
Reference Cell
Electrode constructed of a silver mesh screen treated with silver chloride mounted with a 9” diameter dome. Installed between anodes powered by same controller supply
Stuffing Tube
Through hull watertight electrical connection
Di-electric Shield
-High solids epoxy coating around each anode
- Material - Capastic, only dry application
- Hycote 461 for wet application authorized
Hycote ___ is the only NAVSEA approved product for underwater paintings
Hycote ___ is the inly NAVSEA approved underwater fairing compound
151, 461
WHAT IS THE PURPOSE OF THE STATIC LOAD TEST?
HOLD 200% of ITS MAX RATED LOAD
PROOF PRESSURE IS DESCRIBED BY WHAT DEFINITION?
AT LEAST 1.5 TIMES THE MAX OPERATING PRESSURE
BASIC SUBSYSTEM DIAGRAMS THAT OUTLINE STRUCTURES, SUBSYSTEMS, AND EQUIPMENT ARE CONTAINED IN WHAT RECORD?
CERTIFICATION SCOPE NOTEBOOK
WHAT TEST IS REQUIRED BY THE SCA PRIOR TO A MANNED DEMONSTRATION?
UNMANNED OPERATIONAL
ALL ITEMS ARE INCLUDED IN PSOB EXCEPT?
FAILURE ANALYSIS REPORTS
SHOREBASED HYPERBARIC SYSTEMS REQUIRE OVERHAUL AT WHAT MINIMUM INTERVAL?
EVERY 10 YEARS
WHAT DOCUMENT DEFINES SCOPE OF WORK AND PROVIDES PRODUCTION PERSONNEL WITH STEP-BY-STEP INSTRUCTIONS ON HOW THE WORK SHOULD BE ACCOMPLISHED?
CWP
WHICH DOCUMENT IS PREPARED BY THE APPLICANT FOR USE IN CERTIFYING A HYPERBARIC SYSTEM?
PSOB
DOCUMENT SUBMITTED FOR SAFETY TRENDS AND ANALYZING MISHAPS
HAZREP
WHO IS FAILURE ANALYSIS REPORT SUBMITTED TO
CONFIGURATION MANAGER
HOW LONG CAN YOU EXTEND YOUR CERT DATE
90 DAYS
PURPOSE OF A REC
MAINTAIN SYSTEM “AS CERTIFIED” (DON’T FALL FOR “AS BUILT AS CERTIFIED”)
WHICH OF THE FOLLOWING ITEMS DOES NOT REQUIRE A REC UPON REMOVAL
FLASK CHANGE OUT
ON THE MIP, WHEN AN ASTERISK FOLLOWS A PERIODICITY CODE WHAT INFORMATION IS BEING INDICATED?
SAFETY OF SHIP ITEM
ON AN MRC YOU DISCOVER THAT PERFORMING THE CHECK AS WRITTEN CREATES AN UNSAFE CONDITION TO THE MAINTENANCE PERSON. YOU SHOULD SUBMIT A?
URGENT FBR
WHAT MAINTENANCE SHOULD BE PERFORMED TO RE-ACTIVATE A DLSS COMPRESSOR THAT HAS BEEN IN IEM CAT II?
START UPS (SU)
SHIP SPECIFIC TAGOUT REQUIREMENTS ARE CONTAINED IN WHAT MANUAL?
SHIPS ORGANIZATIONAL MANUAL (SORM)
WHAT COA SHOULD BE TAKEN WHEN MEMBERS IN THE 1ST CLASS DIVE PROGRAM ARE INVOLUTARILY REMOVED?
THEY WILL RETURN AT THE END OF THEIR NEXT DUTY ASSIGNMENT
DIVER REQUALIFICATIONS ARE ENTERED IN THEIR SERVICE RECORD IN WHAT NAVPERS FORM?
/613 (PG 13)
A DIVERS QUALS HAVE LAPSED FOR MORE THAN 1 YEAR BUT LESS THAN 3 YEARS. TO REQUAL WHAT ACTIONS SHOULD THEY TAKE?
PASS PST, CO’s APPROVAL
WHEN A DIVE CANDIDATE ADVANCES TO E-6 DURING DIVE TRAINING?
DISENROLLMENT FROM THE PROGRAM
WHAT TIME WINDOW MUST A DIVE CANDIDATE PERFORM THE FINAL PST PRIOR TO SHIPPING OUT?
WITHIN 30 DAYS OF CHECK IN
WHICH PERSONNEL MAY BE PLACED ON SUPERVISORY STATUS DUE TO INABILITY TO MEET PHYSICAL STANDARDS
MDV
REQUIREMENTS TO STAND THE DIVING OFFICER OF THE COMMAND
MUST BE DESIGNATED IN WRITING BY THE CO
WHEN A MK16 DIVER SIGNALS IN-WATER DCS, WHAT ACTION SHOULD THE SUP TAKE?
DEPLOY THE STANDBY
WHAT RISK FACTOR INCREASES WHEN DIVING MOD 1 VS MOD 0?
CNS O2 TOX
MOD 1 SINGLE UNTENDED DIVER CAN BE AUTHORIZED BY?
EOD DIVING OFFICER
WHEN IS THE MK16 PRIMARY BATTERY LVL CONSIDERED UNSAFE TO PERFORM A DIVE?
5.2 VOLTS
MK16 MAX 02 ATA
1.9 ATA
PROCEDURE FOR ASYMPTOMATIC 1.3 pp02, MISSED DECOMPRESSION STOP SHALLOWER THAN 33
DIVER MUST MANUALLY ADD O2 TO MAINTAIN 1.3 ATA, OR ELECT TO DESCEND PAST 33FT NTE 40 TO RE-TRANSITION UBA BEFORE RETURNING TO THE MISSED STOP.
TENDING LINE COLORED MARKINGS
REDS ARE 50 FT INCREMENTS, BLACK/YELLOWS ARE 10 FT INCREMENTS
WHAT TEMPERATURE REQUIRES A CANISTER INSULATOR FOR MK 25 CO2 SCRUBBER CANISTER?
40 DEGREES
WHAT IS PART OF A MK25 RIG JACKET?
RECs, FARs, MAINTENANCE HISTORY
WHAT RANGE DOES THE MK25 HP OXYGEN REDUCER MAINTAIN?
55-75 PSI
HOW TO IDENTIFY MK25 EXHALATION HOSE
LONGER IN LENGTH AND RED MARK
WHEN A REC IS REQUIRED FOR MK25
WHEN ENTERING THE PNEUMATIC SYSTEM
STEEL TUBULAR ELECTRODES CAN CUT WHAT THICKNESS?
2 INCHES
KERIE CABLE SIZES
6, 9, 12
TYPES OF STAVE BEARING LUBRICATION
BOUNDARY, MIXED-FILM, HYDRODYNAMIC
LEVEL 2 INSPECTION
SYSTEM SPECIFIC, NON-INVASIVE. REQUIRES NO DISASSEMBLY OF COMPONENTS
MAX HULL PAINT LIFE AFTER PERIODIC CLEANING
7 YEARS
TORPEDO TUBE GAP
1/4” - 1/2”
SPM GAP
1/8” – 1/4”
FOULING RATING
0-100, 10 PT INCREMENTS
FULL HULL CLEANING REQUIRED WHEN OVER 10 % OF THE HULL HAS WHAT FOULING RATING?
FR50
HOW MUCH FUEL EFFICIENCY/SAVINGS BENEFIT OF CLEANING AN ENTIRE HULL
50%
WHAT IS AN INTERIM CLEANING
RUNNING GEAR
NSTM TO ENTER A BALLAST TANK
NSTM 074 GAS FREE ENGINEERING
CPP BLADE NUMBERING
1A-2B-3C-4D-5E
WHAT FORM REQUIRED FOR AN RFI PROPELLER
NAVSEA 9245/1
CPP BLADE CHANGE PROPELLER POSITION
12 O’CLOCK
WHAT PERCENTAGE OF ANODE DETERIORATION REQUIRES REPLACEMENT
50%
WHEN PAINTING GREATER THAN 200 SQ FEET WHAT PAINT MACHINE IS USED
LPAM
DP CLASS SHIPS
IMO CLASS 2 OR 3
PREFERRED CLASS SHIP FOR FIREFIGHTING
T-ARS
SAT DIVING LIVING QUARTERS
DECK DECOMPRESSION CHAMBER (DDC)
WHOS APPROVAL REQUIRED FOR DIVING ABOVE 99 DEGREES
NAVSEA
REQUIRED APPROVAL FOR PLANNED DECOMPRESSION DIVES
CO OR OIC
NON DIVING RELATED CHAMBER TREATMENT APPROVAL REQUIRED
BUMED
THE THREE INDEPENDENT ACTIONS REQUIRED FOR AN ELECTRICAL SHOCK
GFI MUST FAIL, THE ELECTRICAL EQUIPMENT MUST EXPERIENCE A GROUND FAULT, DIVER MUST PLACE THEMSELVES BETWEEN FAULT AND GROUND.
WHAT CAN STRAIN RELIEFS BE MADE OF
CABLE, CHAIN, 21-THREAD, OR 3/8” NYLON. TIE WRAPS, TAPE, OR MARLIN NOT AUTHORIZED FOR MARRYING PURPOSES.
OTPA
RELIEVES @ 3300 AND RESETS @ 3000 ± 50. PILOT SHUTS DOWN @ 3250
CIVILIAN DIVER MAX DEPTH SCUBA/MIXED GAS
130/220
TREATMENT TABLE 9 EXTENSIONS
MAX OF 3 – 4 HOURS
TT9 DEPTH
45 FSW
TT9 ASCENT RATE
20 FPM
TT6/6A EXTENSIONS
UP TO TWO 25MIN PERIODS @60FSW, OR TWO 75MIN PERIODS @30 OR BOTH
NITROGEN NARCOSIS ATAs
4
GREATEST CAUSE OF MISHAP
FATIGUE
REQUIREMENTS FOR HOLDING DIVING OFFICER TITLE
THIS WAS A TRICK-ME QUESTION, I DON’T REMEMBER EXACT ANSWER BUT THE CORRECT ANSWER ALLOWS MDV TO ASSUME DIVE-O TITLE
SHALLOW WATER DIVE TABLE APPENDIX 2A RANGE
30 TO 50 FSW RANGE IN 1 FT INCREMENTS
NEUROLOGICAL ASSESSMENT- WHAT 6 THINGS
- MENTAL STATUS
- COORDINATION
- MOTOR
4.CRANIAL NERVES - SENSORY
- DEEP TENDON REFLEXES
OLFACTORY NERVE
PROVIDES SENSE OF SMELL
OPTIC NERVE
PROVIDES EYESIGHT
OCULOMOTOR, TROCHLEAR, ABDUCENS NERVES
THESE THREE NERVES CONTROL EYE MOVEMENTS
TRIGEMINAL NERVE
THE TRIGEMINAL NERVE GOVERNS SENSATION OF THE FOREHEAD AND FACE AND THE CLENCHING OF THE JAW. IT ALSO SUPPLIES THE MUSCLE OF THE EAR (TENSOR TYMPANI) NECESSARY FOR NORMAL HEARING
FACIAL NERVE
THE FACIAL NERVE CONTROLS THE FACE MUSCLES. IT STIMULATES THE SCALP, FOREHEAD, EYELIDS, MUSCLES OF FACIAL EXPRESSION, CHEEKS, AND JAW.
ACOUSTIC NERVE
CONTROLS HEARING AND BALANCE
GLOSSOPHARYNGEAL
THE GLOSSOPHARYNGEAL NERVES TRANSMIT SENSATION FROM THE UPPER MOUTH AND THROAT AREA
VAGUS NERVE
CONTROLS THE ROOF OF THE MOUTH AND VOCAL CORDS
SPINAL ACCESSORY NERVE
CONTROLS THE TURNING OF THE HEAD SIDE TO SIDE AND SHOULDER SHRUG AGAINST RESISTANCE
HYPOGLOSSAL NERVE
CONTROLS THE MUSCLE ACTIVITY OF THE TONGUE
FRESH WATER HAS A DENSITY OF
62.4 LBS PER CUBIC FOOT
SALT WATER HAS A DENSITY OF
64 LBS PER CUBIC FOOT
EGS limitations and requirements
Enough gas required to get the diver back to the stage, leave bottom, and ascend to the first deco stop ( at which divers goes on O2 hence no longer needing EGS)
- All divers must be equipped with EGS.
Hydroblast gun shall be not operated for more than __ mins by any one operator in any __ hour period
85 mins , 24 hours
Cleaning of masker belts should be performed in accordance with this chapter as authorized in
NSTM 081
What should be established before entering the water with tools
Voice communications
What are sea chests on ships `
Sea chests are opening in the ships hull below the water line. Sea chests serve as intakes or discharges between the ship and its sea valves for the drawing in or expulsion of seawater for the ships cooling system.
What are protection sleeves used for
Installed in sea chests to prevent galvanic corrosion of sea chest valves and piping components
Sea chests and protection sleeve drawing numbers are listed in
Standard Work Breakdown Structure series 120
The ICCP system and the sacrificial anodes are the
secondary system of protection
What is the primary protection for ships to avoid corrosion
Anti corrosion coating system
What are the different types of bolts used on CPP blades
morgrip and hytorq
What are vent hoses and fire hoses hydraulically tested to
Vent hose - 30 psi min for 10 mins
Fire hose - Hydro at 250 psi for 10 mins
Types of Towing Machines (Salvage)
Capstan & Gypsy Head
Capstan Max holding tension
45,000 lbs
Anchor windlass/wildcat can pull an ____ lb anchor from ____ feet
8,000 lb 360ft
One shot of chain is how many feet?
90 feet
Anchor on a ARS 50 Class
Stato
Beach Gear: Ground leg wire rope size
1 5/8 6x37
Beach Gear: Ground leg breaking strength
214,000 lbs
1 fathom is ___ ft
6 feet
Beach Gear: Retrieving pendant size
1 1/4 6x 37
Beach Gear in water deeper than ___ft is not recommended
300 feet
What Happened with the USS F-4
Sank off the coast of oahu in 304 fsw. Deepest dive on air led to the need of mixed gas operations. First submarine sinking
What happened with the USS S-4
Sub sank after collision with collision of coast guard vessel. Divers could tap to trapped sailors but could not connect air hose to sub. All sailors died. Led to the creation of the Momsen Lung.
Who created the first escape lung for sub rescue.
Charles Momsen, 1929
What happened with the USS Squalus
Divers used mixed gas to salvage. First use of HeO2. Rescued some of the sailors using the Erickson rescue chamber.
What event led to the Navys interest into Sub Safe program.
USS Thresher sinking in 8,400 fsw because of a bursting pipe.
Ships named after Navy Divers
Charles Momsen, Harvey Milk, Francis Hammerburg, Stetham, Carl Brashear.
Ship named after the first enlisted man
USS Osmand Ingram, first enlisted man killed during WWI
Sealab program
Experimental program that compromised of alot of research and dives for our dive charts and for saturation diving.
Navy Diver medal of Honor recipients
Francis Hammerburg
John Mihaloski
John McDonald
Frank Crilley
Tom Eadie
Orson Crandall
Willaim Badders
NSTM that governs O Rings
NSTM 078
NSTM that governs threaded fasteners
NSTM 075