is called raft
A group of boats is usually referred to as a convoy. If they are a medical group of boats it is normally called a Medical Convoy.
A mushroom anchor should only be used for small, light-weight boats.
Boats used on the canals of Venice are called Gondolas.
There are narrow flat bottom boats called punts, which are moved with the aid of a long pole. The similar boats in Venice are called gondolas. Small boats may be called skiffs, and the flat-bottom canoes of Louisiana are called pirogues. Large boats are canal boats, or barges.
canoes or dingheys?
They were German boats used in WWII.
A type of weeds used to build boats in the past were rushes. These look like tiny sticks of bamboo, are hollow, and they float. They are not suitable for large boats, but can be used to make rafts and very small boats.
killing small children
Germany used U boats.
Mushroom style
they were used to get in to small places that certain sub marines couldn't get into so the U-Boats could kill easier.
The Allies principally used landing ships and small landing craft called Higgins Boats. Once ashore, they used Sherman and British Crusader tanks.