When the motorized vessel is a commercial vessel or when the motorized vessel has another vessel or person in tow.
Not at all. Ask local advice for the types of vessel allowed.
When a sail boat overtakes a power boat the power boat is the stand on vessel.
mainsail
fok j00
The expression "point' in sailing refers to the ability to sail into the wind. If a vessel points well it means that it can sail more into a head wind than a vessel that doesn't point well.
A bentinck sail is a triangular shaped main course with a single clew at the foot of the sail. The sheet is made down to the centreline of the vessel. Occasionally the sail would have a short foot spread with a short boom called a Bentinck boom but still with a single sheet. The the sail gave advantages in heavy weather, obviating the need to raise tacks and sheets when going about and enabling a good view of most of the vessel from aft when manoeuvring. NG
fok j00
a curragh
If a powerboat is about to cross paths with a sailboat under sail give way, the sail boat is the stand-on vessel, therefore you are the give-way vessel and need to move accordingly.
The jibsail or spinnaker sail.
Generally, vessels under sail power have the right of way.