What do four short blasts mean on a boat? - Quora

Answer (1 of 5): Four short blasts don’t mean anything, because another boater might confuse it for three blasts or five blasts, which mean entirely different things. Below is per Boat US. Here is another link for the broader topic of Rules of the Road on water, per USCG. williamsburgchartersails

What do cruise ship horn blasts mean? - Quora

Can sailboats roll over? - Quora

Are submarines safe from attack by other submarines and underwater mines? - Quora

Why did old ships have mermaids on the front? - Quora

What do 4 long blasts of a ship's horn indicate when it is currently docked? - Quora

Has the U.S. Navy ever captured an enemy ship and sailed it under our flag or treated it as a trophy? - Quora

When bridges go up for boats, do the boats signal the bridge

Why does a ship honk 3 times? - Quora

Why is the cargo ship asked to stay in the deep sea if there is a storm in the sea? - Quora

Why do torpedoes cause a disproportionate amount of damage to warships since their payloads are only a few hundred pounds? - Quora