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TOTS 1C-Navigating in Restricted Visibility

CBT 22 questions

First 5 of 22 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    A bell or gong or other device having similar sound characteristics shall produce a sound pressure level not less than how many dB at a distance of not less than 1 metre from it?
    • 100 dB.
    • 110 dB.
    • 1 120 dB.
    • 125 dB.

  2. Question 2

    At what intervals should a power-driven vessel under way and making way through the water, sound one prolonged blast in or near an area of restricted visibility?
    • At intervals of not more than two minutes.
    • At intervals of not less than five minutes.
    • At intervals of not less than two minutes.
    • At intervals of not more than one minute.

  3. Question 3

    At what intervals should a power-driven vessel underway but stopped and making no way through the water sound two prolonged blasts in or near an area of restricted visibility?
    • At intervals of not less than five minutes.
    • At intervals of not less than two minutes.
    • At intervals of not more than two minutes.
    • At intervals of not more than one minute.

  4. Question 4

    At what intervals should a vessel being towed sound one prolonged followed by three short blasts during periods of restricted visibility?
    • At intervals of not less than five minutes.
    • At intervals of not less than two minutes.
    • At intervals of not more than one minute.
    • At intervals of not more than two minutes.

  5. Question 5

    At what intervals should a vessel not under command, or a vessel restricted in her ability to manoeuvre, a vessel constrained by her draft, a sailing vessel, a vessel engaged in fishing and a vessel engaged in towing or pushing another vessel, sound three blasts in succession when in or near an area of restricted visibility?
    • At intervals of not more than two minutes.
    • At intervals of not less than five minutes.
    • At intervals of not less than two minutes.
    • At intervals of not more than one minute.

Preview — 5 of 22 questions

You are seeing the first 5 questions with answers. Unlock the remaining 17 to study the whole test — online or offline.

About this CBT test

TOTS 1C-Navigating in Restricted Visibility is a CBT test with 22 questions and verified answers. Common topics include: sound signal, through water, near area, visibility, periods, intervals, power-driven, underway.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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