ABD Task 2.1.A

Describe functions of mooring and tug lines

MMA Method

In order to satisfy NVIC 14-14 Task 2.1.A , MMA students must:

NVIC Method

See NVIC method.

STCW Competence Knowledge, Understanding, and Proficiency

Contribute to berthing, anchoring and other mooring operations

ABD-A2.1 Working knowledge of the mooring system and related procedures including the function of mooring and tug lines and how each line functions as part of an overall system

Condition Behavior Standard

On board ship or in a laboratory, when questioned by a Qualified Assessor,

the candidate describes the functions of the mooring and tug lines.


The candidate’s description includes established safety practices and equipment operating instructions applicable to the following lines and how these lines function as part of an overall system:

  1. Spring lines;
  2. Breast lines; and
  3. Head and stern line.