OUPV sound and light signals Exam Prep 2025 Questions and Answers

OUPV sound and light signals Exam
Prep 2025 Questions and Answers


whistle means - ✔✔any sound signaling appliance capable of producing the prescribed
blasts andcomplies with specs in annex III

A "short blast" on the whistle has a duration of - ✔✔1 second

Prolonged blast duration - ✔✔4 to 6 seconds

Vessel of 12 meters or more shall be equip with - ✔✔a whistle

on a vessel of 20 meters or more - ✔✔bell and a whistle

vessel of 100 meters of more - ✔✔bell, whistle, gong, tone and sound that can't be
confused with the bell

vessel less than 12 meters - ✔✔not obliged to carry sound signaling devices, but should
be provided with other means of making sound

one short blast or flash - ✔✔I am altering my course to starboard

two short blasts or flashes - ✔✔I am altering my course to port

three short blasts of flashes - ✔✔I am operating astern propulsion/ I am backing up

duration of flashes and interval - ✔✔1 second and 1 second.interval between successive
signals shall be not less than 10 seconds



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