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anyce739 BM1 SWE
Boatcrew Seamanship Manual
75
Other
Professional
01/05/2015

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Term
HEARING PROTECTION REQUIREMENTS
Definition

SINGLE - 85 DB

DOUBLE - 104 DB

Term
FROSTBITE
Definition
LIKELY TO DEVELOP IN AIR TEMPS LESS THAN 20 DEGREES
Term
HEAT CRAMPS
Definition
CAUSED BY EXCESSIVE SALT AND WATER DEPLETION
Term
HEAT EXHAUSTION
Definition
CAUSED BY HEAVY SWEATING
Term
HEAT STROKE
Definition
BREAKDOWN OF THE BODYS SWEAT AND HEAT REGULATING MECHANISMS
Term
ADEQUATE AMOUNT OF DAILY SALT FOR PREVENTION OF HEAT RELATED ILLNESS
Definition
15 - 20 GRAMS
Term
NORMAL PULSE FOR AN ADULT
Definition
60 - 100 BPM
Term
NORMAL ADULT RESPIRATION
Definition
16 - 24 BREATHS PER MINUTE
Term
Types of
Scuba Incidents
Definition
• Air emboli.
• The “bends”.
Term

BANDAGES

BINDER

Definition
A BINDER OF MUSLIM IS USED FOR CHEST AND ABDOMEN INJURIES
Term

BANDAGES

TRIANGULAR

Definition
SCALP, HAND, FOOT, OR OTHER LARGE AREAS
Term
AMOUNT OF BLOOD IN HUMAN BODY
Definition
10 PINTS
Term
CAUSES OF BURNS
Definition

THERMAL

CHEMICAL

SUNBURN

ELECTRICAL SHOCK RADIATION

Term
Chilblains
Definition

Repeated exposure for several
hours to temperatures between
32° F and 60° F, generally
associated with high humidity

Redness and swelling, itching
dermatitis, tingling, and deep aches
in later stages.

Term
Immersion
Foot
Definition

Exposure to cold water, 50° F and
below, for 12 hours or more, or
exposure to water of approximately
70° F for several days.

Swelling of the legs and feet,
cyanosis (a bluish discoloration,
especially of the skin due to a lack
of properly oxygenated blood),

Term
Trench Foot
Definition

Exposure to cold between 32° F
and 50° F, damp weather for
periods ranging from several hours
to 14 days. The average length of
exposure to produce symptoms is
three days.

Swelling of the legs and feet,
cyanosis, blisters, intense burning,
and neuromuscular changes

Term
Level of consciousness for hypothermia
Definition

becomes clouded as their body temperature approaches 90° F
and they generally lose consciousness at 85° F

Term
Blood
Pressure hypothermia
Definition
Hypothermia victims may have a lower than normal blood pressure (normal is about
120/80).
Term
Hypothermia patients are very prone to burns. Hot packs, heating pads, and
hot water bottles may cause third degree burns and must be administered
with extreme care.
Definition
Hypothermia patients are very prone to burns. Hot packs, heating pads, and
hot water bottles may cause third degree burns and must be administered
with extreme care.
Term
Mammalian
Diving Reflex
Definition

Victims who inhale water or who are found floating face-down in the water may be suffering
from near-drowning

Medical researchers have only recently discovered the phenomena of
the “mammalian diving reflex.” In this condition, a person immersed in water (particularly a
child), even under ice, could still be alive.

Term
Poisoning by Mouth
Definition
If medical advice is not immediately available and the patient is conscious, an attempt
should be made to determine if the poison is a strong acid, alkali, or petroleum product. If
this is the case, no attempt should be made to induce vomiting
Term
Blunt Eye
Trauma
Definition
Managing such injuries requires
covering both eyes with a moist
dressing
Term
Penetrating
Objects and
Foreign
Bodies
Definition
Any object that has penetrated the
eye must not be removed as first aid
treatment. Cover both eyes with a
moist dressing, and support the
object if it protrudes to prevent
movement.
Term
Caustics,
Acids, or
Burns
Definition
Immediately flush both eyes with
large quantities of gently flowing
water. Each eye should be flushed
with water for a minimum of 10-15
minutes away from the unaffected
eye. Never use a neutralizing agent
for flushing, use only plain tap
water.
Term
Personnel
Marker Light
(PML)
Definition
The yellow-green light of a PML is visible for a distance of
approximately one mile on a clear night, and lasts as long as eight hours.
Term
Dacron
Definition
A synthetic fiber of about 80% of the strength of nylon that will
only stretch 10% of its original length.
Term
Polyethylene and
Polypropylene
Definition
A synthetic fiber with about half the strength of nylon, 25% lighter
than nylon making it easier to handle, and it floats in water.
Term
Sisal
Definition
Made from the agave plant and is next in strength to manila, being
rated at 80% of manila’s strength.
Term
Manila
Definition
Made from fibers of the abaca plant and is the strongest and most
expensive of the natural fibers.
Term
Braided line
Definition
most commonly used for signal halyard, heaving lines, and lead lines.
Term
Plain-laid line
Definition
may be used for securing loose gear, fender lines, and fancy work
Term
Bollard
Pull
Definition
Bollard pull is the point where the static pulling force becomes such that any increase in
engine load could lead to damage to the engine or the towing bitt
Term
line Aging
Definition

Cellulose, the main component in
natural fibers will deteriorate with age, getting more brittle and turning yellow or brownish

During bending, line
strength may decrease up to five times

Term
Fiber Wear
Definition

When natural fiber line is under strain, the friction of the fibers, yarns and strands against
each other, causes internal wear

Upon
opening the lay of the line, any presence of a white powdery substance indicates small
particles of line worn off by friction.

Term
Fiber Damage
Definition
Damage to internal natural fibers occurs when a line under a strain exceeds 75% of its
breaking strength
Term
Overloading
or Shock-Loading
Definition

Signs that a line was overloaded are elongation and hardness

If the circumference is reduced by five percent or more, the line
should be replaced.

Another indication of synthetic line overloading is hardness to the touch. This can be
noticed while gently squeezing the line.

Term
Rust/Foreign
Material
Definition
Rust stains, extending into the cross-section of natural fiber and nylon fiber yarns can lower
line strength as much as 40%.
Term
Unreeling
Synthetic Fiber
Line
Definition
• Insert a pipe through the center and hang the reel off the deck.
• Draw the line from the lower reel surface
Term
Coiling
Definition
The most common method of stowing the extra line on deck or on the dock after making fast
to a cleat is to coil it.
Term
Flemishing a
Line
Definition
Flemishing a line consists of coiling a line clockwise against the deck. It is used for
appearance
Term
Working
Load Limit (WLL)
Definition

A common
seamanship practice says that the WLL of a line should be not more than one-fifth of its BS,This five-to one
safety factor allows for sudden strains, shock-loading, and normal deterioration as the
line ages

 

Term
Breaking
Strength of Natural
Line+
Definition
The formula for this is: BS =
C2 x 900 pounds.
Term
Estimating
BS of Synthetic
Line
Definition

The formula for estimating the BS of synthetic line is BS = C2 x 900 x CF.

cf=comparison factor

Line Name CF to Manila Line

Polypropylene    1.4
Polyethylene     1.4

Polyester (Dacron)   2.0
Nylon               2.5

Term
WLL of
Natural and
Synthetic Line
Definition
WLL = BS/SF.
Term
The BS of shackles
Definition

up to six times greater than their WLL

Never use a shackle or hook with a WLL less than the WLL of the line being used.

Term
Estimating
the WLL of shackles
Definition

The estimated WLL of
a shackle, in tons, is calculated by using the formula

WLL = 3 x D2.

Term
Unknown BS
and WLL
Definition
The moment the towline is connected to a distressed vessel’s deck fittings, the entire towing
system assumes an unknown BS and WLL factor.
Term
Measuring
Percentage of
Elongation
Definition
The device used to measure the percentage of elongation is called a tattletale cord or a strain
gauge
Term
The weakest point in a line
Definition
the knot or splice. They can reduce the BS of a line as much
as 50 to 60 percent.
Term
Fisherman’s
or Anchor Bend
Definition
The fisherman’s, or anchor bend is used to secure a line to a ring in an anchor or mooring
buoy.
Term
Crown Knot
Definition
A crown knot may be used to prevent an unwhipped line from unlaying
Term
Short Splice
Definition
A short splice is used to permanently connect two ends of a line
Term
Temporary
Whipping
Definition
Whippings are normally made using sail twine, although almost any small stuff
will do.
Term
Permanent
Whipping
Definition

Permanent whippings are made to last. To make one, several wraps are made around the
line using shot line or waxed nylon

Cut enough of the whipping line to allow for 15 to 20 wraps, with at least a
foot of line left over.

Term
Flare
Definition
Flare is the outward turn of the hull as the sides of the hull come
up from the waterline.
Term
Tumble home
Definition
Tumble home is the reverse of flare and is the shape of the hull
as it moves out going from the gunwale to the waterline.
Term
Camber
Definition
A deck usually curves athwartships, making it higher at the
centerline than at the gunwales so the water flows off the deck.
This curvature is called camber
Term
Sheer
Definition
Sheer is the curvature of the main deck from the stem to the
stern.
Term
Chine
Definition
The turn of the boat’s hull below the waterline is called the chine.
It is “soft” if it is rounded, and “hard” if it is squared off.
Term
Draft appendage
Definition
Draft appendage is the depth of the boat from the actual waterline
to the bottom of its keel or other permanent projection (e.g.,
propeller, rudder, skeg, etc.), if such a projection is deeper than
the keel.
Term
Gross Tons
Definition
A gross ton is the entire cubic capacity of a boat expressed in tons of 100 cubic feet
Term
Net Tons
Definition
A net ton is the carrying capacity of a boat expressed in tons of 100 cubic feet.
Term
Deadweight
Definition
Deadweight is the difference between the light displacement and the maximum loaded
displacement of a boat and is expressed in long tons or pounds
Term
Stem
Definition
The stem is an extension of the forward end of the keel.
Term
Sternpost
Definition
The sternpost is a vertical extension of the aft end of the keel
Term
Bar Keel
Definition
The bar keel is popular because its stiffeners protect the boat’s hull plating if the boat grounds on a hard bottom. It also reduces
rolling. A disadvantage of the bar keel is that, because it extends below the bottom of the
boat, it increases the boat’s draft.
Term
Flat Plate
Keel
Definition
The flat plate keel has a plate that is perpendicular to the centerline of the hull.The vertical center keel is often provided with a flange top so that when combined with the
flat plate keel the section resembles an “I” beam
Term
Rounded
Cruiser-Type Stern
Definition
The rounded, cruiser-type stern presents less flat surface area for a following sea to push
upon and tends to split the waves of a following sea, allowing it to pass forward along each
side of the boat. Thus, the wave has minimum impact
Term
Bermuda High:
Definition
A semipermanent high-pressure area off of Bermuda. It affects the
general wind circulation and the weather of the East Coast, especially summer heat
waves.
Term
Santa Ana Wind
Definition
On the southern California coast, a dry, warm wind that blows through
a pass and down the Santa Ana Valley. It may blow so strongly that it threatens small
craft near the coast.
Term
Taku Wind:
Definition
A strong east-northeast wind, in the vicinity of Juneau, Alaska, between
October and March, that can threaten small craft near the coast. It sometimes reaches
hurricane force at the mouth of the Taku River
Term
weather
Definition
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