Because they are both "Canons", that is they are musical pieces that are arranged for part of the orchestra (or one or more vocalists) to repeat the first four bars upon the commencement of the second four bars. i.e. first singer singer sings "Row Row Row Your Boat, and as they begin singing the next line "Gently down the stream", the second singer starts with "Row, row, row your boat" etc
narrowboat
The cannon is located on the flying boat high in the sky. Once you reach the flying boat the cannon is located at the back of the boat.
Air
After a certain point in the game, you go to Cannon Island. Then you get the cannon
The points related to the boat trip in Three Men in a Boat, by Jerome K. Jerome are GEORGE's rejection of cheese and GEORGE's responsibility of towing the boat.
boat people
A flat sphere.
Steering.
I think you might mean 'gunwale,' which is the top edge of the side of a boat.
A house boat.
The purpose of firing a Canon from a ferry boat was to let the shipping traffic, going up and down the river, no that a vessel was crossing the shipping lane. This method was used before there was radar.
The who fled by sea became known as the Haitian boat people.