life preserver
A vessel at sea is said to be underway.
None. A vessel underway under normal conditions does not need to make any sound signal.If the vessel ceases to make way it still does not make a sound signal unless special circumstances apply.
A vessel that is underway but not making way would exhibit sidelights if it is a power-driven vessel or a sailing vessel with a motor. Sidelights consist of a green light on the starboard side and a red light on the port side, indicating the vessel's orientation. Even when not making way, the sidelights serve to signal the vessel's presence and direction to other vessels in the vicinity. Additionally, a vessel at anchor would display an all-round white light instead of sidelights.
power boat
Whenever a danger of collision exists.
Whenever a danger of collision exists.
Whenever a danger of collision exists.
Whenever a danger of collision exists.
Whenever a danger of collision exists.
Its nine years old
USCG Navigation Rules International (i) /Inland (h) General Rules 3-Continued The word "Underway" means that a vessel is not at anchor, or made fast to the shore, or aground; There is a link provided below with more info on underway vessels.