“From Middle English sterbord, stere-bourd, stere-burd, from Old English stēorbord, from Proto-West Germanic *steurubord, equivalent to steer +‎ board (“side (of a ship)”), referring to ancient ships with the steering oar set to the right (to accommodate right-handed crew)”

https://en.m.wiktionary.org/wiki/starboard

Correct. Sailors aren’t known for their diction lol

Maybe. Others have said that when in port the starboard side of the ship is where you would see start out at sea - the port side facing the bright city.

A lot of this is partially lost to history and a guess. I am not enough of a historian to know what the truth is.