MACHINERY SPACE CATEGORY

As per SOLAS machinery space categorization :

Machinery spaces of category A

Those spaces and trunks to such spaces which contain either:

1. Internal combustion machinery used for the main propulsion,

2. Internal combustion machinery used for purpose other than the main propulsion where such machinery has in the aggregate a total power output of not less than 375 kW, or

3. Any oil-fired boiler or oil fuel unit, or any oil-fired equipment other than boilers, such as inert gas generators, incinerators, etc, (SOLAS).