Basic Boat Handling

Question 1

What are the 2 types of stability?

Answer 1

Longitudinal and transverse

Question 2

What is the force of buoyancy?

Answer 2

Upward force of water displaced by the hull; keeps the boat afloat

Question 3

What is a righting movement?

Answer 3

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

Question 4

What is set?

Answer 4

The direction the current is flowing

Question 5

What is drift?

Answer 5

The speed of the current

Question 6

State the effects of leeway

Answer 6

Leeway can determine how a boat with take wind (sail area vs underwater hull’s lateral resistance)

Question 7

Definition of cavitation

Answer 7

The formation of a partial vacuum around the propellor blades of a vessel

Question 8

What causes cavitation?

Answer 8

It occurs when the prop rotates at very high rates of speed or when going from full ahead to full astern

Question 9

What is slip?

Answer 9

The difference between the theoretical and actual distance travelled by the prop

Question 10

What is the 50/50 box?

Answer 10

Tool used for determining PPE

water temp and air temp below 50, drysuit with layer 1 and layer 2.

Water temp between 50-60 and air temp above 50, anti exposure coveralls.

Water temp above 60 and air temp above 50, work uniform