BASIC NAVIGATION
What device shows direction?
Compass
When two power-driven vessels meet head-on, what must each do?
Each alter course to starboard
What lights must a power-driven vessel show?
Masthead, sidelights, stern light ⚪ (masthead), 🔴 (port), 🟢 (starboard), ⚪ (stern)
One short blast means what?
I intend to leave you on my port side.
Who is stand-on in crossing vessels?
Vessel with other on her starboard side
What is the purpose of GPS?
To determine precise position
What is the stand-on vessel’s responsibility?
Maintain course and speed unless action is needed
What lights does a vessel at anchor show?
Anchor light (all-round white light) ⚪
What does two prolonged blasts mean?
I am operating astern propulsion
Which vessel must keep out of the way in a crossing situation?
Give-way vessel
How often must sound signals be made in fog?
At intervals of not more than 2 minutes
How is a vessel engaged in fishing indicated?
Red and white lights or shapes 🔴⬜
What shape indicates a vessel aground?
Three black balls (day shapes) ⚫⚫⚫
What sound signal signals “danger”?
Five short blasts
In narrow channels, which vessel has right of way?
Vessel going upstream
What must vessels do in restricted visibility?
Proceed at safe speed, sound fog signals, maintain lookout
What does Rule 5 require?
Maintain a proper look-out
What lights are displayed by a vessel towing?
Towing light (yellow over white) 🟡 above ⚪
What does one prolonged and two short blasts mean?
“I am maneuvering with difficulty.”
What is the give-way vessel expected to do?
Take early and substantial action to avoid collision
What is the rule for crossing vessels in restricted visibility?
Use radar and maintain safe speed
What does a pilot vessel display?
White over red lights
⚪🔴
What lights does a vessel not under command display?
Two red lights in a vertical line 🔴🔴
When is a vessel “restricted in ability to maneuver”?
When engaged in operations limiting ability to maneuver
Meaning of 5 short blasts?
Danger or man overboard signal