seamanship

Question 1

2 ways to classify line

Answer 1

Material used, size

Question 2

Small stuff

Answer 2

up to 1.5”

Question 3

Line

Answer 3

1.5 - 5”

Question 4

Hawser

Answer 4

Larger than 5”

Question 5

Strongest line material

Answer 5

Nylon

Question 6

2 types of line that float

Answer 6

Polypropylene and Polyethylene

Question 7

Plain-Laid

Answer 7

Made of three strands, right- or left-laid. Most common is right-hand laid.

Question 8

Cable Laid

Answer 8

Made of three, right-hand, plain-laid lines laid together to the left to make a larger cable.

Question 9

Plaited

Answer 9

Made of eight strands, four right-twisted and four lefttwisted. Strands are paired and worked like a four strand braid.

Question 10

Braided

Answer 10

Usually made from three strands (sometimes four) braided together. The more common braided lines are hollow-braided, stuffer-braided, solid-braided, and double-braided.

Question 11

Double-braided

Answer 11

Made of two hollow-braided ropes, one inside the other. The core is made of large single yarns in a slack braid. The cover is also made of large single yarns but in a tight braid that compresses and holds the core. This line is manufactured only from synthetics, and about 50% of the strength is in the core

Question 12

What is Sisal line made of?

Answer 12

Agave plant. 80% of manila’s strength.

Question 13

Two characteristics of Double braid nylon for strength increase.

Answer 13

Elongation and Elasticity

Question 14

What is Bollard Pull?

Answer 14

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.

Question 15

Preferred method of cutting synthetic line

Answer 15

Hot Knife

Question 16

A Bend

Answer 16

used to secure two lines together

Question 17

A Knot

Answer 17

used to tie a line back upon itself

Question 18

A Hitch

Answer 18

used to tie a line to ring rail or spar

Question 19

Bowline Knot

Answer 19

used to create a temporary eye in a line.

Question 20

Clove Hitch

Answer 20

best all around knot for securing a line to a ring or spar

Question 21

What is the preferred know for securing a heaving line to a towline?

Answer 21

Clove hitch

Question 22

Single Becket bend (Sheet Bend)

Answer 22

used to bend two lines of equal size together

Question 23

Double Beckett Bend

Answer 23

Used to tie two lines of unequal size together.

Question 24

Common heaving line length

Answer 24

75 - 100ft

Question 25

Crown Knot

Answer 25

used to prevent unwhipped line from unlaying

Question 26

Surgeons knot

Answer 26

Used to join lines of equal or unequal diameters or materials.

Question 27

3 hull types

Answer 27

Displacement
Planing
Semi-Displacement

Question 28

Flare on hull

Answer 28

Outward turn of the hull from waterline to gunwale

Question 29

Camber

Answer 29

The curve of the deck athwartships. I.E. the deck is higher at the centerline

Question 30

Keel

Answer 30

The backbone of the boat. Center of the bottom of the boat.

Question 31

Stern Post

Answer 31

The vertical extension of the keel on the transom of a vessel.

Question 32

Keel Types

Answer 32

1. Bar Keel

2. Flat plate keel

Question 33

What is pitch

Answer 33

The distance a propeller travels in one revolution without slippage.

Question 34

Kicker hook

Answer 34

Also called a skiff hook. Used to attach a line to a trailer eyebolt.

Question 35

center of gravity

Answer 35

The center of gravity is the point at which the weight of the boat acts vertically downwards

Question 36

buoyancy

Answer 36

The buoyancy is the upward force of water displaced by the hull

Question 37

Equilibrium

Answer 37

When a boat is at rest, the center of buoyancy acting upwards/vertically is below the center of gravity acting downwards

Question 38

2 types of stability

Answer 38

longitudinal and transverse

Question 39

Righting Moment

Answer 39

the force causing a vessel to react against a roll and return to an even keel

Question 40

Force types that effect stability

Answer 40

Dynamic and static forces.

Question 41

What is free surface effect

Answer 41

The movement of fluids in an open partially filled compartment that can cause degradation in stability due to the fluids innate desire to be parallel to the surface of the water.

Question 42

What is downflooding

Answer 42

Entry of water into the hull from the top down. (an open hatch in rough seas)