Action for an OOW when a vessel is sighted 20° to port at < 2 miles with risk of collision? and sound one short blast Passing Requirements

According to training resources from sites like Sea-Man.org and Scribd , common questions in the 0172 module include: Correct Answer Duration of a "prolonged blast" defined in COLREGs?

Educational channels often post full walkthroughs of the 0172 Revision 7 test on Vimeo to help mariners familiarize themselves with the interface.

Whistle signal for a power-driven vessel altering course to port in sight of another?

Knowing the duration and frequency of signals, such as a "prolonged blast" (4–6 seconds) or fog signals for different vessel types.