Step aboard the USS Kearsarge, the US Navy workhorse that takes Marines to war

In US Navy history, just four ships have borne the name Kearsarge.

The first, a Civil War sloop, sank the CSS Alabama off the coast of France in 1864.

The next one, a battleship, sailed around the world with Theodore Roosevelt's Great White Fleet.

The third, an aircraft carrier, recovered astronauts from the sea during Project Mercury, the US's first human-spaceflight program.

The current USS Kearsarge, an amphibious assault ship that docked in New York City for Fleet Week, has a lower profile, but it is no less essential to the fleet.

"We have a very special mission as opposed to your other ships of the Navy," Lt. J.G. Christian Sedarski, a deck-division officer on the Kearsarge, told Business Insider. "Sometimes we will conduct firings on the beaches and that kind of thing, but we are strictly landing and bringing back Marines from the beach."

"So the way I like to explain it is, we are a glorified hotel with a F-150 flatbed," he added.

It also has extensive medical facilities, capable of taking in wounded troops as well as survivors of natural disasters. Its ability to hold 600 patients makes it second to only the Navy's ready-reserve hospital ships in medical capacity.

In a display of its versatility, the Kearsarge deployed to provide flood relief in Pakistan in August 2010, steaming west six months later to support operations in Libya as part of Task Force Odyssey Dawn.

Below, you can take a tour of Kearsarge and get an up-close look at a ship that ferries Marines and their gear into battle around the world.