TS 13116

TS 13116 is a occupational standard that defines the second machinist seafarer role and sets out the basic professional framework for that function. In a ship’s engine department, the second machinist has a key technical position in the operation, supervision, and maintenance of main machinery and auxiliary systems; this standard addresses the overall scope of the occupation.

The technical meaning of the engine-room role

A second machinist is technical personnel who connects the propulsion plant with power-generation and service systems on board. Ship machinery works as an integrated system: power production, fuel arrangements, lubrication, cooling, auxiliaries, and automation must function together. For that reason, the role is not limited to hands-on mechanical work; it also involves monitoring, recognizing signs of malfunction, contributing to planned maintenance, and maintaining disciplined safe operation during voyages.

What this standard provides as a professional framework

The focus of this standard is the second machinist occupation itself, meaning the definition of its field of duty and the technical area in which the role is assessed. The maritime regulations and STCW-based competency approach referenced for the profession highlight the importance of knowledge, skill, and discipline in such duties. In general technical context, this occupation matters because it supports safe ship operation, continuous supervision of machinery systems, and proper coordination between different onboard mechanical subsystems.