Convoy, also you could use Flotilla.
fleet.
fleet
a fleet
A group of ships is called a fleet of ships.
A collection or group of ships is called a fleet. There are more specific terms for a group of ships. A substantial group of warships is called a naval fleet while a group of small ships is called a flotilla.
a fleet
it is called a fleet of ships
A group of sheep is call
A group of sailors is a ships crew.
a Fleet
A fleet
Flight of stairs and Fleet of ships.
A group of several ships traveling together is called a convoy.
A convoy.
a novel fleet