submarine
Submarines use them.
A junk is a type of Chinese sea vessel from ancient origins, but still used in modern times.
A vessel on the sea often refers to a ship or boat on the ocean. By definition a vessel is a craft designed for water transportation
PERISCOPE
In a storm a sea anchor can help a vessel from drifting off course. It will keep the bow in the wind and slow the speed of the vessel.
A vessel at sea is said to be underway.
There is no set range limit for a periscope; it's affected by many factors, weather conditions playing a large part. In addition to weather, the height of the periscope above the water, sea state (height of the waves), target profile (large, small, low or high in the water), daytime or nighttime, all affect a periscope's actual range.
a ship
A Ship
BATHYSPHERE
what are sea-going vessels
A submarine is a sea-going vessel, both on the surface and under the water.
Although there are certain 'Rules of the Road' for vessels at sea the prime objective is to avoid collisions. There are numerous cases when a sailing vessel would give way to a power driven or any other type of vessel. It is mostly common sense.