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California Boating 

A Course for Safe Boating

41

Chapter 2

u

Boating Law, Navigational Rules and Navigational Aids

Poor and Restricted Visibility

Poor and restricted visibility may be caused by fog, mist, falling snow, heavy

rainstorms, or even blowing sand or smoke. For all vessels not in sight of

one another when navigating in or near and area of restricted visibility,

the navigation rules require every vessel to slow to a minimum, safe speed

according to the conditions present. You should navigate with extreme

caution and take action to alter course in ample time to avoid collision. When

underway in restricted visibility, you must sound a warning signal at least

every two minutes.

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A motorboat should sound one prolonged blast every two minutes.

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A sailboat under sail should sound one prolonged blast, plus two short

blasts, every two minutes.

REVIEW QUESTIONS: NAVIGATIONAL RULES

Define the following terms:

1. Stand-on vessel

.

2. Give-way vessel

.

3.  Danger signal

.

Answer the following questions by circling

T

for true or

F

for false.

4. In a head-to-head meeting situation, one short blast indicates your intention to pass port to port . . . T F

5. When approaching a blind bend or when operating under poor visibility, no special

precautions need to be taken T F

Turn to page 100 for correct answers.

TAKE NOTE

Use common sense, extra caution

and boating skill when:

Visibility is poor because of fog,

rain, bright sun or other reasons.

The operator of the oncoming boat

is not following the standard rules of

navigation or is operating the vessel

recklessly.

Operating your vessel in heavy-

traffic areas.