Star Trek

During World War II, Marines continued to serve on capital ships. They often were assigned to man anti-aircraft batteries. When gun cruisers were retired by the 1960s, the remaining Marine detachments were only seen on battleships and carriers. Its original mission of providing shipboard security finally ended in the 1990s when nuclear weapons were withdrawn from active deployment and the battleships were retired.

http://en.wikipedia.org/wiki/United_States_Marine_Corps

Handbook for NCO Marines that are afloat

http://books.google.com/books?id=t_t_pIcBe5gC&lpg=PA218&ots=irROFk-YJg&dq=shipboard%20security%20%2B%20marines&pg=PA218#v=onepage&q=shipboard%20security%20+%20marines&f=false

Marines and GW Navy personnel training together aboard ship

http://www.c7f.navy.mil/news/2009/05-may/32.htm

GW Sailors, FAST Marines Cross-Train on Shipboard Security Measures
By Mass Communication Specialist 3rd Class William P. Gatlin

Posted: May 26, 2009

WESTERN PACIFIC OCEAN - Thirty Marines assigned to Fleet Anti-Terrorism Security Team Pacific (FASTPAC) Company, 5th Platoon, based at Fleet Activities Yokosuka, are underway with USS George Washington (CVN 73) conducting joint security force training with GW security personnel.

PACIFIC OCEAN (May 22, 2009) – Marines with Fleet Anti-Terrorism Security Team Pacific (FASTPAC) instruct Navy Diver 1st Class Joshua Amberger, Explosive Ordnance Disposal Technician 2nd Class Neal Weston, and Navy Diver 2nd Class Brian Shubert during a M-240B machine gun live fire exercise on the fantail of the USS George Washington (CVN-73). Marines from FASTPAC are conducting training with George Washington security forces. (U.S. Navy photo by Mass Communication Specialist Seaman Adam K. Thomas/RELEASED)
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Marine Capt. Christopher Dell, the platoon commander, said cross training opportunities like this one allow members of both services to enhance their training and experience in order to better maintain the overall security of the ship.
 

“I think it’s very beneficial for the Marines and Sailors to integrate together,” said MA1 Mark Delisle, who serves as GW’s command investigator and leading petty officer of Operations Department’s, ON division. “Even though both services use basically the same techniques and tactics, cross training gives both Sailors and Marines an opportunity to learn different things that each of us might do differently. That’s mainly what it’s all about. We’re just trying to broaden our horizons as it relates to doing our jobs.”
 

The Marines came on board to share with Sailors their expertise in the Marine Corps Martial Arts Program (MCMAP) and non-lethal hand-to-hand combat. They’ll also conduct Mechanical Advantage Control Hold (MACH) drills, oleoresin capsicum (OC) spray qualifications and weapons training, as well as Visit, Board, Search, and Seizure (VBSS) drills.
 

“We will be instructing GW Masters-at-Arms in MCMAP techniques to better protect themselves and using hand-to-hand and baton MACH drills to further train them in their existing abilities to maintain the safety of GW against any confrontation,” said Squad Leader Cpl. Austin Rice.

Stars and stripes

http://www.stripes.com/news/fast-response-marine-unit-at-yokosuka-shares-its-security-skills-1.90875

*sighs*

I don't care what they show on Star Trek or Star Wars, space is not an ocean. Far too many SF shows make the scientifically inaccurate assumption that space travel will be just like ocean travel.

This is very wrong.

In particular, space is not two-dimensional, there is no friction in space, and spacecraft will not have their decks laid out as if they were seagoing vessels.

More debatably, spacecraft classes will probably not be named after naval ship classes (e.g., Cruiser, Battleship, Destroyer, Frigate, etc.), the military rank structure will probably be more like the Air Force instead of the Navy, and space pirates are highly unlikely.