A.a tugboat
B.a sailing vessel
C.a power-driven vessel
D.a vessel propelled by machinery and under sail

A.Whether or not all of the vessel's control equipment is in working order
B.The vessel's draft in relation to the available depth of water
C.Whether the nature of the vessel's work limits maneuverability required by the Rules
D.Whether or not the vessel is the give-way vessel in a meeting situation