Day Skipper training module 15 of 17
Precautions and limitations imposed by fog and restricted visibility.
You are preparing a real trip where your understanding of precautions in fog shapes the decision. Use this module to explain the cue, the risk, and the next safe action before you move on.
5 lesson sections · 18 quiz questions · 12 flashcards
On narrow screens, scroll sideways to reach every study mode.
Use this module hub to choose the right lesson, then open the dedicated lesson page for the complete explanation, worked examples, FAQs, and practice questions.
Fog is one of the most dangerous conditions for small-craft sailors. Visibility can drop to metres with little warning. Your ability to see hazards, other vessels, and navigation marks is...
Treat deteriorating visibility as a coordinated response: proceed at a safe speed, have engines ready for immediate manoeuvre, show navigation lights, make the required sound signals, and...
Rule 35 of the COLREGs specifies sound signals in restricted visibility. A power-driven vessel making way: one prolonged blast (4–6 seconds) every 2 minutes. A power-driven vessel stopped...
Without visual references, you must rely on instruments. GPS provides your position — plot it on the chart regularly. The echo sounder gives depth — compare it with the chart to confirm y...
Rule 19 applies to vessels not in sight of one another in restricted visibility. The normal in-sight stand-on/give-way rules (Rules 12–18) do not apply when the vessels cannot see each ot...
Add the complete practice layer
Keep reading the public lesson articles, and add this module's guided flow, quizzes, spaced-repetition flashcards, progress, and mock exams with one payment.