Boat Crew Seamanship Flashcards
What is height of MK 79?
250-650’
How long does MK 127 burn for?
36 sec
What angle do you fire MK 127?
90*
A whistle’s sound may be heard up to _____
1,000 meters/1100 yards
How much does MK 124 weigh?
8 oz
What is burn time of MK 124?
20 sec
What angle do you hold MK 124?
45*
How many flares does MK79 kit have?
7 flares, 1 projector
What is burn time for MK 79?
4.5 sec
How many candlepower is MK 79?
12,000 candlepower
What knot is used to attach the MK124?
Surgeons Knot
Survival mirror is on which side of vest?
Right side
What is length of temp whipping?
10 x’s circumference
Endurance of 47’ MLB in 12’ seas and 20 kt winds?
8 hrs
Min. crew of 47’ MLB
4
During a search, post __ lookouts (#)
2
Lookout duties should be kept to a minimum when boat is __ NM from shore
3
The horizon is _* and directly overhead is ______
0, Zenith - 90 overhead
When scanning, scan in small __* increments
10*
Move into a dark environment __ mins prior to getting underway
30 mins
Helsman should maintain a course within __ *
5*
to check if boat if drifting, take bearings on __ seperate objects at least __* apart
3, 45*
Swing circle radius is equal to the boat’s length plus the length of the ___ _____
anchor chain
Applications for regatta/marine patrols to CG at least __ days prior. Major/new events should be submitted __-__ days
30 days, 90-120 days
Refrain from smoking or eating __ prior to the PT test
2 hrs
Boatcrew physical fitness test is administered ______
annually
Don’t take antimotion sickness med within __ hrs
12
Use single hearing protection for __ dB, and double for ___dB
85, 104
Rafts are usually carried on boats greater than __ feet
30’
A raft is attached to a __ft painter
50’
The painter line on a raft is attached to a weak link, which takes ___lbs of force to seperate
500 lbs
Small stuff is up to __” in diameter
1.5”
Frostbite is likely to develop in air temps below __*F
20*F
Sunscreen of SPF __ should be used
15
A person become’s nauseated when they lose __% of body fluids
5% (6-10% are more serious Sx)
Characteristic of heat stroke is body temp above ___*F
105*F
Under conditions of profuse sweating, a person needs ____ or more of fluids per hour
one pint (0.5 liters)
There are __ Team Coordination Skills
7
Four rules of risk management:
Integrate risk management into plans, accept no unnecessary risk, Make risk decisions at the appropriate level, accept risks if benefits outweigh costs
for shock, elevate lower extremities __-__ inches
8-10
Normal pulse
60-100 bpm
Normal respirations
16-24 rpm
Death can occur __-__ mins after respiratory failure
4-6 mins
Look, listen and feel for __-__ sec
5-10
Hypothermia is defined as core temp of less than __*F
95
Seek Medical Control Guidance if core temp is below __*F
86
How many pints of blood in human body?
10 pints
Only use a Temporal pressure point for __ sec
30 sec
Use Carotid pressure point only for a few ___
seconds
Place a tourniquet __-__ inches above the wound
2-3 inches
There are ___ bones in the body
206
To treat a broken leg, use ___ splints
three
Flush chemical burns for ___ mins
20 mins
After heat cramps, avoid re-exposure for __ hrs
12 hrs
After heat exhaustion, avoid re-exposure for __ hrs
24 hrs
Heat stroke will have body temp of 105-___F
109*F
MK 127 parachute flare descends at a rate of _____
10-15 fps
MK 127 climbs to an altitude of ___-____
650-700 ft
Line is ___ to ___ in circumference
1.5” to 5”
Hawser is _____
everything over 5” in circumference
in DBN, how much strength is in the core?
50%
Sisal is rated at __% of manila’s strength
80%
What is the point where the static pulling force becomes such that any increase in engine load could lead to damage to the engine or towing bitt?
Bollard pull
Polypropelene can lose __% of its strength in over 3 months of exposure
40%
damage to internal natural fibers occur when a line under a strain exceeds __% of its breaking strength
75%
The WLL should not be more than __ of its breaking strength
1/5th
Breaking strength should be __ X’s the weight of the object being lifted
5 x’s
Comparison factor for Polypro line is ___
1.4
Comparison factor for Nylon is ___
2.5
Heavy displacement hull cannot exceed a speed of ____ x’s the square root of their waterline length
1.34 - known as critical speed
A strong thunderstorm needs as few as __ miles of open water to build a 3-4 ft chop
5 miles
A working, or service anchor should have the holding power equal to approx. __% of the boat’s displacement
6%
A storm anchor should be at least ___-___% as effective as the working anchor
150-200%
Enough rode should be paid out so the lower end of the rode forms an angle of __% or less
8%
Scope of the anchor rode should be __:1 and __:1
5:1 and 7:1
For Heavy Wx, scope of the anchor rode should be __:1
10:1
CG National Distress System provides coverage for boats with antennas __ ft above the waterline and __miles offshore
6ft, 20 miles
Channel 16 is ______MHz
156.800
MF/HF frequency for SAR?
2182 kHz
Ops and Position every __ mins
30 mins
If comms are lost for __ mins, contact operational command
60 mins
All boats __ft and over require bridge-to-bridge comms
26 ft
PAN-PAN is concerning ?
Safety of ship, aircraft, vehicle or person
SECURITE’ is concerning ?
Safety of navigation
A radio-alarm should be not less than __sec, not more than __ min
30 sec, 1 min
COSPAS-SARSAT detects what two EPIRBS?
406 & 121.5
To estimate lightning, observe the flash, count the # of seconds it take for the sound, divide the number by __
5
The most troublesome type of fog is _________
advection fog
freezing point of seawater is __*F
28*F
Generally, a swell’s direction of travel differs from the wind direction by at least __*
30*
The yellow-green PML is visible for a distance of __ mile(s), and lasts for __ hrs
1 mile, 8 hrs
Units that operate in temps below __*F shall use distress signal lights in place of PMLs
below 10*F
Anti-exposure suit should be worn in water temps below __F and air temps below __F
60F, 80F
Land heats and cools __ x’s faster from night to day than water
3 x’s
Navigator should plan to reach an entrance at least ____ hr before predicted time of desired current
0.5 hr
IALA stands for ?
International Association of Lighthouse Authorities
Aids in Guam, Tinian and other outlying areas are in what IALA system? A or B?
IALA A
Cardinal marks have what colors?
Black and Yellow horizontal bands
RACON extends for __-__ NM
1-2 NM
The diameter through the equator is about __ NM longer than at the poles
23 NM
Great circles have ___* of arc
360*
1* of arc= __ mins
60 mins
1 min of arc= __ secs
60 secs
The North Pole is __* North Latitude
90*
The south Pole is __* South Latitude
90*
Parallels are measured from ____ to ____
North to South
Always use _____ to measure distance
Latitude
The Prime Meridian is ___*
000*
Mean low water is a __ year average
19 year
Coastal charts are between _____-______ ratio
1:50k - 1:150k
Harbor charts are larger than ______ ratio
1:50k
Small craft charts are at scales of ____ and larger
1:40k
A Deviation table is tabulate for every __*
15*
One NM is ____ ft
6076 FT
Tidal current charts are on a __ hr cycle
12 hr
Min range for radar is usually ___-___ ft in front of boat
20-50 ft
Horizon = ____ SQ RT of Height of Eye
1.144
DGPS is accurate to within __ meters
10 meters
Majority of SAR cases occur within __ miles of shore
20 miles
Three phases for SAR:
Uncertainty, Alert, Distress
SLDMB transmits its position to every __ mins for the first __ hrs, then every __ mins after
15 mins for 2 hrs, then 30 mins
SS turns are __* to starboard
90*
SM turns are __* to the right of the first unit’s course
45*
VM begins the first course __* to the left of the first boat
90*
The CSP for parallel patterns is ____ the distance of the track spacing
half
Parallel runs along the _____ axis
major
Creeping line runs along the ____ axis
minor
For initial response, SRU should conduct a SS or VS with a __NM search radius
6 NM
Track spacing for PIW
0.1 NM (200 yds)
The recommended size for OSCAR is ___lbs dry
180 lbs dry
The Multiple Person Recovery system will inflate in less than ___ sec
10 sec
an extra 50’ of towline will give ___-___ ft more stretch
5-20 ft
a drogue should be ____ft of ___inch dbn
200 ft of 2 inch dbn
Drouges should be marked every ___ ft
50 ft
Safe towing speed=
1.34 X SQ RT of LW - 10%
When operating in heavy seas, turn into the wind or seas __-__* off bow
30-40* off bow
Fire Tetrahedron
Heat, Fuel, Oxygen, Chemical chain reaction
One gallon of AFFF will produce ___ gals of foam
133 gallons
One 5 gallon can of AFFF will last ____ mins
1.5 mins
Halon system distributes a __-__ % concentration
5-7%
When Halon is released, run vent on high for __ mins before re-entering without a breathing device
15 mins
What is an alternative to Halon?
FE-241
2 common diameters of fire hoses
1.5 inch and 2.5 inch
a drop pump holds approx __ gals of water
38 gallons
CG pump will run on gas for approx ___-____ hrs
2-3 hrs
Parbuckling may be used to right boats over __ ft
25 ft
Max endurance of HH65 is ___ hrs
3 hrs
Hoist capacity of HH65 is ___ lbs
600 lbs
External Cargo sling limit of HH65 is ____ lbs
2,000 lbs
External Cargo sling limit of HH60 is ____ lbs
6,000 lbs
The stokes litter has a __ lb ballast weight
5 lbs
A trail line is ___ ft of orange polypro
105 ft
The weak link between the hoist hook and trail line breaks at ___ lbs of force
300 lbs
a __ lb weight (or heavier) is attached to the trail line
5 lb
Do not exceed __ kts when towing a helicopter
5 knots
the HH60 flotation bags provide aircrew ___ mins to exit
2 mins
a knockdown is when a boat rolls __* or greater
90* or greater
Heavy Wx is defined as seas greater than __ ft and winds exceeding __ kts
8 ft, 30 kts
3 minute rule is:
Yds travelled in 3 mins divided by 100
