Which description fits a green lateral buoy in the US system?
- A can-shaped buoy with an odd number
- A cone-topped buoy with an odd number
- A can-shaped buoy with an even number
- A cone-topped buoy with an even number
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A. A can-shaped buoy with an odd number
Green buoys are cans (cylinders with flat tops) and carry odd numbers. Red buoys are nuns, with cone-shaped tops and even numbers.
Reference: US Aids to Navigation System (33 CFR 62.25)
A chart shows 3 ft of water over a sandbar. Which measurement of your boat tells you whether you can cross it without touching bottom?
- Beam
- Freeboard
- Length overall
- Draft
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D. Draft
Draft is the vertical distance from the waterline down to the lowest point of the boat (often the propeller or keel), so it is the least depth of water the boat needs. Freeboard is measured upward from the waterline and says nothing about clearing the bottom.
Reference: NASBLA boating education standard: boat terminology
A passenger falls overboard while the boat is underway. What should be done first?
- Throw a flotation device and keep the person in sight
- Jump in at once and swim to help the person
- Put the engine in reverse and back toward the person
- Radio a Mayday before doing anything else
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A. Throw a flotation device and keep the person in sight
The immediate steps are to shout 'man overboard', throw something that floats, and have someone point at the person continuously while the operator turns back. Backing toward a person puts the propeller next to them.
Reference: NASBLA boating education standard: person overboard