On the newer class submarines that don't employ optics, they're called "Photonics Masts". But it's still a Periscope.
Periscope.
The object used to view the outside from inside the submarine is called a periscope.
The captain of the submarine raised the periscope to see if there's danger.
A submarine's viewing point is called a "periscope." The periscope allows crew members to see above the water's surface while the submarine remains submerged. It typically consists of a series of mirrors and lenses that provide a clear view of the surroundings, enabling navigation and observation without exposing the submarine.
The submarine
The submarine's periscope and radar mast are damaged.
Periscope
red
i think you mean the 'periscope'.
If you mean in the periscope, two.
In paintball wars, a periscope is a handy way to look around a corner without getting shot. With only its periscope out of the water, a submarine was nearly impossible to spot at a distance.
The periscope of a submarine is located in the sail, also known as the conning tower. This structure is situated above the main hull and contains various equipment, including the periscope, which allows submariners to observe the surface while the submarine remains submerged.