Technical TermsRSS

Technical Terms


Lima - L = signal letter and flag. Morse = ( . - . . )Flag= Two yellow and two black squares.When hoisted singly from a ship it means "Stop, I have something important to communicate." (Kerchove)

A device for hoisting and lowering the davit- launched lifeboat

A winch designed for hoisting and lowering the life boat.

The maximum rope speed (in meters per second) that the winch can maintain with the rope wound on the drum in a single layer, and with negligible tension on the rope, normally not more than 10% of the drum load.

A prime mover which is suitable only for operating the deck machinery in a light loaded condition. Example: Reeling in of an untensioned rope, or topping an unloaded derrick.


Mike - M = signal letter and flag. Morse = ( - - )Flag= Diagonal white cross on blue background.When hoisted singly from a ship it means "I have a doctor on board." (Kerchove)

The maximum static pulling force produced through a vessel’s harbor pile towing test.

A winch with the ability to hold and haul a tensioned mooring rope and having a capacity for rope storage, controlled solely by hand.

Maritime Simulation Center Netherlands. Located at Wageningen it was also known under that place name.


November - N = signal letter and flag. Morse = ( - . )Flag= Four horizontal rows of alterned blue and white squares.


What is NDE? Nondestructive evaluation (NDE) is a term that is often used interchangeably with NDT.However, technically, NDE is used to describe measurements that are more quantitative innature. For example, an NDE method would not only locate a defect, b ...


What is NDT ? The field of Nondestructive Testing (NDT) is a very broad,interdisciplinary field that plays a critical role in assuring that structural components and systems perform their function in are liable and cost effective fashion. NDT technicians ...

A machinery device, which, with assist of the friction between reel and nets, lifts nets onto the board, shore, or ice surface from water.

Maximum speed, maintained by a winch when it is bearing the drum load (m/s)

Average speed of recovery two shots of chain cable when three shots are submerged and freely suspended at commencement lifting (m/s)

The most essential characteristic parameters of a machine mechanical performance, indication with some important technical index.


Oscar - O = signal letter and flag. Morse = ( - - - )Flag= Halved diagonally in red and yellow.When hoisted singly from a ship it means "Man overboard."

A reel designed for receiving/rendering and storing the marine & on-shore cable


Papa - P = signal letter and flag. Morse = ( . - - . )Flag= White square on a blue background.Called "Blue Peter" as when hoisted singly from a ship it means "The ship is going to sail.

Pipe-bundle also called umbilical stalk, which bundles together different supply pipes like air, fresh water, electrical power, communicative signal pipes, through which the underwater working unit obtains the supplies from the base above water or underwa ...