scope:

General 

Application

The requirements in this section apply to all reciprocating internal combustion engines installed on DNV GL classed ships.

Reciprocating internal combustion engine used for main functions listed in Pt.1 Ch.1 Sec.1 Table 2 or emergency duty are subject to approval, certification, installation survey and shipboard testing according to these rules.

"Reciprocating internal combustion engine" in this section is referred to as "engine" 

For the purpose of these requirements, engines are:

- diesel engines, fuelled with liquid fuel oil

- dual-fuel engines, fuelled with liquid fuel oil and/or with gaseous fuel

- gas-only engines, fuelled with gaseous fuel only and ignited by either a spark or micropilot of liquid fuel oil 

Depending on engine speed, engines are divided into:

- Low-Speed Engines means engines having a rated speed of less than 300 rpm

- Medium-Speed Engines means engines having a rated speed of 300 rpm and above, but less than 1400 rpm

- High-Speed Engines means engines having a rated speed of 1400 rpm or above