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CPM > Boat Systems > Flashcards

Boat Systems Flashcards

2
Q

Pressure Water

Which pumps should you listen to?

A
  • Bilge pump
  • Electric water pump (leak or faucet left open)
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3
Q

De-watering

What’s a limber hole?

A

Hole allowing the water to drain to the bilge pump pick-up area

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4
Q

De-watering

What are the two possible placements of the bilge pump?

A
  • pusher
  • puller
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5
Q

De-watering

What key system is the bilge pump connected to?

A

Typically connected directly to the batteries (cannot be shut off without electrical disconnection)

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6
Q

De-watering

What’s the difference between a seacock and a thruhull?

A
  • Seacock is the valve
  • Thruhull is the hole the valve is attached to
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7
Q

De-watering

What types of valves are seacocks?

A

Ball-valves (as opposed to gate-valves)

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8
Q

De-watering

How are the hoses attached to the seacocks?

A

Double hose clamps

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9
Q

Pressure Water

What are the key components of the water system?

A
  • 2 tanks
  • 2 valve
  • Manifold (distribution)
  • Manual galley pump
  • Electric pump
  • Accumulator tank
    • Cold water outlets
    • Hot water tank
      • Hot water outlets
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10
Q

Electrical Systems

How are AC and DC systems connected?

A

Only via the charger

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11
Q

Electrical Systems

How is the capacity of house-batteries measured?

A

AmpHours

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12
Q

Electrical Systems

What is the voltage of a fully charged house battery?

A

12.8V (100% charge)

Note: while charging batteries the voltage may show 13.8V

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13
Q

Electrical Systems

At what voltage should a battery never go below?

A

12.2V (50% charge)

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14
Q

Electrical Systems

At what voltage is the house battery useless?

A

11.9V (25% charge)

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15
Q

Electrical Systems

How is the capacity of the starting batteries measured?

A

In cold-cranking amps

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16
Q

Electrical Systems

What part of the electrical system can potentially interfere with another boat system?

A

Fluorescent lights can interfere with both SSB and VHF

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17
Q

Electrical Systems

How much electricity does a typical cruising boat consume under sail each day?

A

140 amp hours

18
Q

Electrical Systems

How is an alternator rated?

A

In Amp Hours (110 - 150)

19
Q

Electrical Systems

How much charge does an alternator actually produce?

A

Charges at less (1/2) than its rating.

20
Q

Communication

What VHF channel is used for bridge-to-bridge?

A

13

21
Q

Communication

What VHF channels are used by VTS?

A
  • 12 international waters
  • 14 inland waters
22
Q

Communication

What is MMSI?

A
  • Maritime Mobile Service Identity
  • Registration number for EPIRB and other DSC-enabled radios
  • Must be registered with the Search and Rescue authorities prior to proceeding to sea
23
Q

Communication

What should you do before and after each sail?

A
  • File a float-plan with primary and secondary contacts before cruising
  • Advise upon safe arrival.
24
Q

Diesel Auxiliary

What are the key elements of the fuel system?

A
  • TankShut-off valve
  • Electric fuel pump
  • Primary fuel filter with water drain valve
  • Secondary fuel filter
25
Q

Diesel Auxiliary

How often should the oil be changed?

A

After 100-150 hours of cruising

26
Q

Diesel Auxiliary

What are the key components of the cooling system?

A
  • Raw water system
    • intake sea-cock
    • strainer
    • pump with impeller
    • water-lock
  • Closed coolant system
    • reservoir
    • pump
27
Q

How do you check the propane level?

A
  1. Pour hot water on tank
  2. Where it condenses is the level
28
Q

What is activated by the propane solenoid control?

A
  • Propane solenoid
  • Propane sniffer
29
Q

How do you test the propane system?

A
  1. Pressurize
  2. Check PSI
  3. Wait 15 mins
  4. Re-check PSI
30
Q

Electrical Systems

How many Amps can you access from your battery bank?

A

only 1/2

31
Q

Electrical Systems

How should the state of the battery charge be measured?

A

Open Circuit

Nothing switched ON / No power being used

32
Q

Electrical Systems

When can you use the microwave?

A

Only on shore power

Not advised on inverter

33
Q

Electrical Systems

At what RPM should you run your engine to sufficiently charge the batteries?

A

3/4 of RPM capacity

34
Q

Communication

What channel is used for general commercial uses?

A

9

35
Q

Communication

What channel is used by the Coast Guard?

A

22A

36
Q

Diesel Auxiliary

How often should you change the fuel filter?

A
  • after about 450 hours
  • every 3rd oil change
37
Q

Diesel Auxiliary

How often should you change the air filter?

A
  • After 150 hours
  • Every oil change
38
Q

Cooking Stove

How to check for leaks?

A
  1. Light stove
  2. Turn stove off
  3. Turn tank off manually
  4. Closed system should remain constant

CPM (15 decks)

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