Any small collar made with spunyarn or light line to hold something in place.

The passing of several turns of line across the jaw of a hook to prevent something on the hook, such as an eye or a line, from jumping clear.

Small stuff seized across a hook to prevent it from unshipping (once hooked, mousing keeps the hook on).

A device that reduces heat loss at night and during cloudy periods and heat gain during the day in warm weather. A movable insulator could be an insulative shade, shutter panel, or curtain.

A mercury barometer of the fixed cistern type in which a moveable scale terminating in an ivory point is used to compensate for the variations in the height of the mercury in the cistern

Marine Protection Area

Combination minimum pressure valve and check valve.

Miles Per Gallon

Manual of Petroleum Measurement Standards (API)

1.Multi Purpose.2.Installations character for Marine Pollution Prevention Installations.

Maritime rescue coordination centre

Maritime Regulatory Reform.

Mobility Requirements Study

Marine Rescue Sub-Centre

1.Marshall Islands (flag).2.ABS Marine Services.

Maritime Subsidy Board

Maritime Safety Committee

Maritime Safety Center (US Coast Guard)

Military Sealift Command

Material Safety Data sheets. Detailed Information about the dangerous products carried.