The phrase "red-light returning" on a boat typically refers to a navigation indication that signals the vessel is returning to port or a safe harbor. It may also imply that the boat is approaching a channel or an area where caution is required, as indicated by red navigation lights. In maritime navigation, red lights generally signify that the vessel should be on the port side, guiding the way for safe passage.
parked (i docked the boat)
I'm on a boat" is like saying "on a roll". Things are going incredibly well for you and nobody can touch you, because you're on a boat!
The phrase doesn't mean anything. Going from the back to the front of a boat would be said as going from stern to stem, going from aft to bow or simply going forward, usually pronounced 'forrard'
If you are on the water, you're on top of it, so you'd either be on a boat or a raft or a surfboard or something else that floats.
At the tiller means steering something, or deciding upon its direction. A tiller is a lever attached to a rudder which steers a boat.
Cowboys loved a colorful phrase! This meant to go or run away. The image is of someone paddling a boat quickly.
It is spelled U-Boat not you-boat.
The code flag "P" is a signal flag in the International Code of Signals, and it represents the word "Papa." When displayed, it indicates that the vessel is returning to port. Additionally, it can also signify that the boat has a diver down and that vessels should keep clear.
The 'bow' of a boat is the pointy bit at the front! So to "stand in the bows of a boat" simply means that the person has gone to the front of the boat and is standing as far forward as they can get. Colloquial English uses the phrase 'IN the bows' rather than 'AT the bows' but means the same thing.
A boat should cruise between a green and red buoy. The red buoy will always be located on the right side of your boat. Red buoys will always mean , returning, red, and right. There will be a number on a red buoy that will give the chart location. The numbers will always be even.
he could be working means the person either doing work in present or will be doing in future. for exapmle: he could be returning by next week -> future.
It's a boating phrase. Overboard means to go over the board, which is part of the boat. If you go overboard on a boat, you fall out into the water. As an idiom, it has come to mean doing so much that it seems excessive.