Ship Construction

Question 0

Sagging.

Answer 0

Bow and stern are on crests and midship sags.

Question 1

Forces on a boat. Stresses.

Answer 1

Compression.
Tension.
Torsion or torque.
Shear.

Question 2

Hogging.

Answer 2

Ship is riding on the crest of a wave. Top tension. Bottom compression.

Question 3

Keel.

Answer 3

Strength begins with keel.

Question 4

Strakes.

Answer 4

Planks making up the hull.

Question 5

Gar board strake.

Answer 5

First plank or strake.

Question 6

Seer strake.

Answer 6

Last plank butting up against the deck.

Question 7

Deck stringer.

Answer 7

First stringer on the deck at the outer strake.

Question 8

Bulkheads.

Answer 8

Run athwartships and strengthen the entire hull from twisting.

Question 9

Cambered.

Answer 9

Deck is arched so the water runs off.

Question 10

Scuppers or freeing ports.

Answer 10

Holes in the bulwark to let deck water out.

Question 11

Freeboard.

Answer 11

Portion of hull from the waterline to the deck, which catches wind.

Question 12

Bulwark.

Answer 12

A fence around the hull.

Question 13

Shaft log.

Answer 13

Shaft runs through hull for engine to propeller.

Question 14

Packing gland.

Answer 14

Seals water from coming through shaft log.

Question 15

Strut and cutless bearing.

Answer 15

Outside shaft supporting the shaft.

Question 16

Propellor is like a …

Answer 16

Screw moving thought the water.

Question 17

Pintle and gudgeon

Answer 17

Rudder has pintles that fit in the gudgeon on the stern.

Question 18

Displacement

Answer 18

Weight of water displaced by boat.

Measured in long tons 2240 lbs.

Question 19

Gross tonnage.

Answer 19

Cubic measurement of cargo space.

Volumetric measurement.

Question 20

Net tonnage.

Answer 20

Excludes bulkheads and machinery, just cargo.

Question 21

Gross tons = L x B x D / 100 x .50 sail or .67 power

Answer 21

(32 x 12 x 5)/100x 0.50