Submarine - USS
Blueback (SS-581)
A submarine is a
watercraft capable of independent operation underwater. It differs from a
submersible, which has more limited underwater capability. The term submarine
most commonly refers to a large crewed autonomous vessel. However, historically
or colloquially, submarine can also refer to medium-sized or smaller vessels
(midget submarines, wet subs), remotely operated vehicles or robots.
USS Blueback
(SS-581) is a decommissioned Barbel-class submarine formerly in the United
States Navy. She was the second Navy submarine named for a form of the rainbow
or steelhead trout found only in Lake Crescent on the Olympic Peninsula in
Washington state. The fish lives in deep water and is bluish black along its
upper sides and whitish underneath.
Launched on 16
May 1959 ,
Commissioned on
15 October 1959,
Decommissioned
on 1 October 1990
She was the last
non-nuclear submarine to join the United States Navy and was the final
conventionally powered submarine to be decommissioned, leaving the United
States Navy with a fully nuclear submarine fleet.
Torpedo : The modern
torpedo is a self-propelled weapon with an explosive warhead, launched above or
below the water surface, propelled underwater towards a target, and designed to
detonate either on contact with its target or in proximity to it.
Historically, it
was called an automotive, automobile, locomotive or fish torpedo; colloquially
called a fish. The term torpedo was originally employed for a variety of
devices, most of which would today be called mines. From about 1900, torpedo
has been used strictly to designate an underwater self-propelled weapon. The
original torpedo is a kind of fish.
As on today
(Nov-2012) India has 16 Submarines.
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