Updated at: 13-09-2021 - By: Lucas

There are many different types of submarines. Each type of submarine has different functions and capabilities. Some types of submarines are used for spying, some are used for military purposes, and others are used for research.

In this article, we are going to discuss the types of submarines that are used for military purposes. These types of submarines are generally very large and have very advanced technology.



An U-boat was a German submarine that was used during World War II. The name comes from the German word “Unterseeboot” which means “undersea boat”. U-boats were used to attack Allied shipping. They could remain underwater for long periods of time and travel great distances while surfaced.

U-boats were designed to be extremely hardy and capable of withstanding very harsh conditions. They were basically floating cities under the sea. U-boats had their own power plants, fresh water, food, workshops, hospitals, armories, and even cinemas! U-boats could remain submerged for up to three weeks at a time. A typical U-boat had a crew of about 40 men.

Today, the u-boat is still used as a promotional tool by various businesses. It has become a symbol of efficiency and high quality. If you have a business that offers excellent customer service, then you should consider using the u-boat as a symbol to help promote that fact.

Midget Submarine


A midget submarine is a very tiny one that is designed to travel on the surface of a body of water. These little submarines are perfect for snorkelers and divers who want to explore wrecks and other underwater locations.

A midget submarine has a hull that is only 4-1/2 inches thick. The midget in the name refers to the fact that it is designed to be operated by a person with a height of 4-1/2 feet or less. The interior of the craft is constructed so there is plenty of room for the driver and any passengers. 

There’s also a large, clear acrylic viewing window in the front of the craft. This allows the driver to see what’s ahead, as well as see above the surface of the water.

A midget submarine is a scaled-down version of a full-sized submarine. It is propelled by an electric motor and has a range of approximately 10-feet. This allows you to explore wrecks and other underwater discoveries without having to worry about getting too far from the surface.

Midget submarines come in many different shapes and sizes. Some are quite small and portable. Others are much larger and can be used in larger bodies of water. 

Personal Submarine


A personal submarine is a great way to explore the ocean floor. You get to go down deep and see all kinds of interesting things. It’s a great conversation piece too. You can take it to a party and impress your friends by showing them the cool stuff you found while exploring the ocean depths.

There are many different makes and models of personal submarines. Some are large, others are much smaller. What they all have in common is that they let you dive to a certain depth and then allow you to resurface to the surface. Most personal submarines have a small control panel with gauges and switches for operating the craft. Some have joysticks or steering wheels instead.

Personal submarines are made in many different ways. Some are made by individuals. Other are made by companies. The one made by the Scuba Schools of America is an excellent example of how a personal submarine can be mass-produced at a very low price. It uses a simple design and is easy to operate. All you really need to know is how to scuba dive.

Deep-Sea Submergence Vehicle


The deep-sea submersible vehicle (DSV) is a self-contained underwater craft that allows a person to safely explore the ocean depths. DSVs are similar to remote-controlled underwater vehicles (ROVs), except that they are much larger and are designed to operate at greater depths for longer periods of time.

These vehicles are used for a wide variety of purposes. Sometimes they are used for scientific research. Other times they are used for military purposes such as undersea spying and exploration. Still others are used for commercial purposes such as undersea oil and gas exploration. Basically, these vehicles are used for anything that requires humans to be underwater and unable to use their hands.

They also use it for exploring wrecks and other underwater sites. This vehicle is used for research and development. The Navy SEALs and the researchers use this type of vehicle to go where no human being has gone before. They use it to explore the deepest parts of the ocean. They use it to explore sunken aircraft carriers and other ships. They use it to explore wrecks and other underwater sites.

They were first developed during World War II for use by the U.S. Navy. The DSV is the most common type of vehicle used by scientists doing oceanographic research. A typical DSV has a crew of two: a pilot and a technician. The pilot is responsible for the vehicle’s navigation and the technician is in charge of the scientific equipment.

Deep Submergence Rescue Vehicles


A deep submergence rescue vehicle (DSRV) is an autonomous underwater vehicle (AUV) that is designed to explore and map the ocean floor. It is primarily used by the United States Navy and was developed in the 1980s. The DSRV is a tethered vehicle, which means it is attached to a ship or submarine with a tether.

The DSRV has a streamlined cylindrical body with a large conical nose. There are four thrusters mounted around the nose of the vehicle, two on each side. Two of the thrusters are used for maneuvering the vehicle, while the other two are used for stability. 

The thrusters are powered by two diesel engines. The vehicle is controlled by a pilot sitting inside a capsule on top of the vehicle. The pilot uses a joystick to control the vehicle.

A deep-sea submersible vehicle (DSV) is a vehicle specifically designed to operate underwater. DSVs are built to withstand extremely harsh conditions and to have a very long lifespan. DSVs are used for a wide variety of purposes including scientific research, search and rescue operations, and commercial operations such as oil and gas exploration and mining.

The DSV can operate for extended periods of time under extreme pressure and can descend to a maximum depth of 3,000 feet. It can travel over rugged terrain and can even climb sheer vertical walls. The DSV is used for scientific research and can be outfitted with various sensors and cameras.

Naval Submarines


A naval submarine is a self-contained underwater vehicle (SCUBA) that has been designed and built to explore and/or recover sunken submarines and their equipment. A naval diver needs a different set of skills and equipment to explore and recover a sunken submarine than an ordinary SCUBA diver.

Naval submarines are built to very precise tolerances. They must be extremely stable on the bottom and extremely buoyant when fully loaded with fuel and supplies. This means that a naval submarine is a very heavy boat. 

In fact, a typical modern nuclear powered submarine is more than two hundred and fifty feet long and weighs more than two hundred and forty tons. That’s almost twice the weight of the Titanic!

Naval submarines are designed to stay submerged for long periods of time. They are built in sections and then assembled like giant jigsaw puzzles. Once they are fully assembled, they are tested and given the OK to go into service. 

The way they work is by using an electric motor to power a hydraulic pump. This pushes water through a pipe system which provides both forward and reverse thrust.

Naval submarines are very quiet. Even when they are running at full throttle, they only emit a faint hum. This means that they are virtually impossible to detect with the human ear. This also makes them an ideal choice for espionage missions.

Naval submarines are used by navies (armed forces) for both offensive and defensive purposes. A submarine is a hunter-killer; it seeks out and destroys enemy vessels. 

Submarines can travel long distances underwater, remain submerged for long periods of time and even travel completely submerged during extreme weather conditions. The best known use of submarines is to attack other ships. However, they also serve on land, where they are used to search for and destroy land targets.


Why are submarines important?

Submarines are important because they can go where other ships can’t go. 

They can operate deep underwater, far from the coastlines of their potential enemies. This makes them hard to detect and even harder to find and target for an enemy force. In addition, their very nature of operating underwater gives them a significant strategic advantage over surface ships. A submarine can travel at a depth of up to 200 feet (60 meters) and still remain underwater.

This allows it to avoid detection by sonar. It also means that any threats or prey detected by the submarine are at a great distance and therefore difficult for the enemy to attack.  In addition, a submarine can travel underwater at speeds of up to 5 knots (11 kilometers per hour). This is much faster than a ship on the surface. 

Therefore, if a submarine spots a potential threat or an opportunity to attack, it has the ability to close with and attack the target before the enemy even knows the submarine is there! In fact, a submarine can travel at such high speed under water that it can actually attack targets before they have a chance to detect it!

What is the fastest submarine?

The fastest submarine is the Russian Typhoon class. It can travel at speeds of up to 45knots (52mph) under water. 

It has a top speed of just over 2knots (2.3mph) on the surface and is equipped with two 450hp diesel engines. It has a range of just over 12,000nm at these speeds which translates to an endurance of just over four days.

Who invented submarine?

If we have a look into the history, the submarine has been invented in 1578 by William Bourne. It was known as the submarine Nautilus. 

This invention was used by the English navy for the first time during the second world war. After that, many other countries also developed this technology. And now we have the modern submarines with nuclear power. These are the most advanced submarines in the world.

Which country has best submarines?

The Russian army takes the first place in this ranking. The Russian Navy has the largest number of submarines in the world. Russia has more than 200 submarines, they are very advanced. Submarines are the most important part of the Russian Navy.

How do submarines get air?

Submarines get air from the surface. A pipe is connected to the surface. The pipe is called a snorkel. The tube is raised and lowered by a special mechanism. This special mechanism is controlled by the submarine’s navigator.

When the tube is near the surface, water flows into it and pushes the tube down. When the tube gets near the bottom, water can no longer flow into it and the tube goes back up to the surface. When the tube is near the surface, air can flow out of it. This lets the submarine get air to breathe.

How long can submarines stay underwater?

Submarines can stay underwater for months at a time. They have to come up to the surface to get air for the crew to breathe. They also have to come up to connect to the electricity supply. 

How deep can submarines go?

Most submarines can dive below 200 metres. The deepest submarine dive ever made was almost 3,700 metres. The pressure at that depth is about 2 tons per square inch. 

That’s the equivalent of being 4 miles high above the surface of the ocean! When a submarine goes deeper, it has to slow down and reduce its buoyancy (the tendency for it to rise to the surface). This is because there is less water in which to float.

How do submarines see?

A submarine has to be able to see in order to complete its mission. Submarines use periscopes, which are like tubes with lights on the ends. They also have radar which can see in all directions with the help of antennae. 


Submarines are really amazing vehicles. Not only that, they are also very difficult to detect. That’s why they are perfect for smuggling people and drugs.

Submarines are very useful and they can be used in many different ways. You should know a lot about them if you want to have a successful career as a navy officer.

We hope that this article will help you learn more about these types of vehicles.