A submarine is a small, sleek and maneuverable vessel designed to carry military, industrial and civilian cargo.
They were originally built in the 1930s as the backbone of the Japanese Navy.
They’re now often used for surveillance and anti-submarine warfare.
As they age, they’re built to withstand heavy and long-term wear and tear.
Today, there are over a dozen types of submersibles in the world.
Green submarine, submarine city A new submarine in the Green Submarine city is a submersible that is designed to be a green submarine city.
Submarines, in general, have become more green in the past decade.
In 2012, Japan began the construction of new ships that will allow it to meet the needs of the growing number of civilian submarines.
The navy hopes to have a fleet of 25 new submarines by 2020.
“This is the last time that the submarines will be built as a blue-collar industry,” said Tomohiro Fukasaku, who heads the navy’s marine program.
A green submarine in Tokyo, Japan, in 2015.
According to the government, Japan has the largest navy of any country in the Pacific.
It currently has 20,500 active and reserve service personnel.
About 6,000 of those are active duty, and another 3,000 are in reserve.
Japan is expected to build at least 20 new subs for the next decade.
The navy has already been experimenting with different materials for submarines.
Last year, it built a new type of submarine, called a “green” submarine, that will be more like a submarine city than the current blue submarine.
For the last 10 years, the government has been developing and testing a new, more advanced design called the “Green Submarine City” which is intended to be more durable, faster and quieter than current submarines.
It uses a mix of titanium and aluminum to build its hull and other components.
One of the main challenges is that these submarines are often built to run for a maximum of 20 years.
As they age and wear out, the new designs are expected to have fewer maintenance options.
They also can’t be used for long-range patrols.
At the same time, they are also expected to become cheaper to build and maintain than the existing designs.
With the new design, the navy hopes the subs will be able to be deployed more easily on the battlefield.
While the Green SUBmarine City is still a few years away, some of the new subs already in service have been used in exercises around the world and for underwater surveillance.
Some of the subs have also been used for the first time to test out new technologies in the field of surveillance.
Last month, a Japanese submarine was used to conduct an underwater test of the capabilities of an underwater camera system called the Aquarium.
Other subs are being tested in the Japanese and Chinese navies.
The Japanese submarine, known as the Yumi, was tested for the latest in advanced technology for its cameras, the MIRI-P, which allows it to track targets underwater for up to three days at a time.
China also is testing its own underwater cameras and drones.
It has deployed the MOLIN-N-P3M underwater camera to help detect mines in the Yellow Sea.
In the United States, the Navy is testing a submarine that is expected in service by 2021.
It is called the Midshipman.
It was designed as a counter to the Chinese MOLINE-N, a radar-evading sub that the Navy has been testing since 2010.
There are plans for the new sub to replace the existing fleet of submarines and replace them with new subs that have less hull space, more power and smaller engines.
Since being unveiled last year, the Green submarine city is one of the most talked-about submarines at a submarine show in Tokyo.
Japanese Prime Minister Shinzo Abe visited the submarine city and was also shown the Aquarius.
What do you think of the Aquarias new submarine?