The more boating knowledge you have the safer you will be on the water. 

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Take our boating quiz.
Intracoastal  Waterway:
How to read the navigational aids found on the ICW.
The ICW is all around Florida so you need to know about it.
Heliograph:
Those pesky CD-ROM disks that come in the mail, don't discard them.
They can be useful on your boat.
Radio Do's and Don'ts:
Review your knowledge of proper VHF radio usage.
Longitude:
Early mariners were able to measure latitude with some precision.
Accurate measurement of longitude eluded them until the invention of the chronometer.
Crew Overboard:
An extremely hazardous situation.
Review your knowledge of recovery procedures.
Marlinespike:
Learn to tie the essential knots using animated diagrams.
Fuel Management:
Learn to find the engine rpm that will result in maximum cruising-range.