M

major equipment list

The major equipment list is the first material list that is produced for a vessel, containing items requiring special attention (such as the main engine). MEL is continuously split up in a refining process. MEL constitutes a purchasing structure of a vessel, especially in the early stages of planning and design.

manufacturing bill of materials

See bill of materials.

manufacturing status

See status.

marking

The process of making marks on a plate, indicating for example, the position of stiffening profiles or writing attribute text on the plate. The marking is most often done in the plate cutting machine.

master equipment list

See major equipment list.

material list

See parts list. The engineering bill of materials (EBOM) is produced during the design of a product as opposed to the manufacturing bill of materials. It is often used as a basis for material ordering.

MBOM

See manufacturing bill of materials.

MEL

See major equipment list.

modelling

The process of building up the Product Information Model for a particular project (ship).

model version

See ship model version.

module

• A term used for planning purposes which defines a rough geographic area in the ship. It may, but need not, correspond to an assembly for manufacturing. Further, it may, but need not, correspond to a compartment.

• Sometimes used for an application or program.

molded length

For a stiffener: the distance along the trace between the end points of the profile in the design model.