A muffler system must be installed in a powerboat to prevent excessive or unusual noise.
muffler system
muffler
scrap metal
never
scrap metal
an exhaust muffler an exhaust muffler
you want to make a hole in a muffler or you want to patch one up. Make a hole you can use a drell patch a hole best use sheet metal and rivets then muffler puddy around that
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
Powerboat
Powerboat A should give way to B.
muffler