5.2.2.1 The temperature of the cooling medium
and the temperature of the charge air shall be recorded. The cooling
system shall be set with the engine operating at the reference speed
and load. The charge air temperature and cooler pressure drop shall
be set to within ± 4 K and ± 2 kPa, respectively, of
the manufacturer's specification.
5.2.2.2 All engines when equipped as intended
for installation on board ships must be capable of operating within
the allowable NOx emission levels of regulation 13(3) of Annex VI at an
ambient seawater temperature of 25°C.footnote