Sound Signals

Question 1

A power-driven vessel making way restricted visibility

Answer 1

One prolonged blast (interval nmt 2 minutes)

Question 2

A power-driven vessel underway NOT making way restricted visibility

Answer 2

Two prolonged blast (nmt2 second interval between blasts, nmt 2 minutes between signal)

Question 3

Other restricted visibility

Answer 3

one prolonged two short (nmt 2 minute interval)

Question 4

A vessel being twoed or multiple tows

Answer 4

one prolonged three short, ideally after the tow has sounded her signal (nmt 2 minute interval)

Question 5

At anchor less than 100m in length

Answer 5

ring bell rapidly for 5 seconds (nmt 1 minute interval)

Question 6

At anchor more than 100m in length

Answer 6

ring bell rapidly for 5 seconds fwd, and then gong for 5 seconds aft (nmt 1 minute interval)

Question 7

Aground

Answer 7

Same as at anchor but with three distinct strokes on the bell immediately before and after

Question 8

20m or less at anchor

Answer 8

not obliged to make bell signals but shall amke some other efficient signal at same intervals