- Magnetostrictive Effect
Sonar sound waves are made by passing electrical current through coils wrapped around iron bars with flat faces. The bars expand or contract and make the sound waves.
- Masking Tape
Thick rolls with one sticky side out and used to clean lint
off dress blues.
- Master at Arms
The ship's official police officer, usually a bos'n mate.
- McNamaraís lace
The fancy rope work used to decorate an admiralís barge or
Meals Ready To Eat. Three lies in four words.
A "privileged" term reserved for seamen and firemen new to the ship. It usually lasted only for a month or two unless the recipient earned extra time through various means.
- Mid Rats
A snack served at the mess decks before the mid watch while underway.
The "worst watch" which was from midnight till 0400 and for which you were
usually allocated an extra hour of sleep in the morning.
- MK-1A (Mark One Able)
Electro-mechanical (analog) computer. The
"father" of all modern fire-control computers. Used aboard virtually
every U.S. Navy destroyer, cruiser, and battleship of World War Two.
Another definition, usually the "designation" of any
"first-time" equipment newly introduced into use by the U.S. Navy.
- Mickey Mouse
Chicken shit. Make-work or other onerous and unnecessary duties to keep swabbies busy and out of trouble.
- Monkey's Fist
A rounded knob at the end of a light throwing line which the Boatswain's
mates would use to heave the first line across to another ship or pier.
The Monkey's Fist had a lead weight in the center to give it extra momentum
when the bosun's mate aimed it at some unwary seaman in the target area.
- Most Skosh
In just a little while.
An officer that came up from enlisted rank.