ASA Marine Systems & Equipment 2

Question 1

What is the primary function of a marine holding tank?

Accepted Answer

Collect and store sewage until it can be properly discharged

Answer

Store fresh water for drinking and cooking

Answer

Hold diesel fuel for the auxiliary engine

Answer

Serve as a ballast tank to improve stability

Question 2

What type of battery is best suited for a house bank (sustained onboard loads) on a sailboat?

Accepted Answer

Deep-cycle battery

Answer

Starting (cranking) battery

Answer

Lithium-ion starting battery

Answer

Gel automotive battery

Question 3

What is 'raw water' in the context of a marine engine cooling system?

Accepted Answer

Water drawn directly from outside the hull to cool the engine

Answer

Unfiltered fresh water stored in the water tank

Answer

Treated water used in the closed engine coolant loop

Answer

Condensation collected from the bilge

Question 4

Which component in a marine electrical system prevents battery overcharging?

Accepted Answer

Voltage regulator or charge controller

Answer

Fuse panel

Answer

Inverter

Answer

Galvanic isolator

Question 5

What is the purpose of VHF Channel 16?

Accepted Answer

International distress, safety, and calling channel

Answer

Weather broadcast channel for NOAA forecasts

Answer

Bridge-to-bridge communication for large ships only

Answer

Reserved for marina and port communications

Question 6

What does AIS (Automatic Identification System) do on a vessel?

Accepted Answer

Broadcasts and receives vessel identification, position, and navigation data

Answer

Automatically steers the boat to avoid obstacles

Answer

Controls engine throttle based on GPS speed data

Answer

Generates digital charts for the chartplotter

Question 7

What is the main mechanism of galvanic corrosion on a sailboat?

Accepted Answer

Dissimilar metals in contact with seawater creating an electrochemical reaction that erodes the less noble metal

Answer

Salt air oxidizing above-water stainless fittings

Answer

UV radiation breaking down the hull gelcoat

Answer

Engine exhaust gases corroding underwater fittings