SOLAS Rules

For Ships carrying chemicals or oils in bulk, SOLAS/IMO require a fixed deck foam system for extinguishing fires on deck or in tanks.
In principal, the systems required are identical. However for chemical tankers, IMO type2 and 3, the foam system is considerably lager than for crude oil tankers, due to the higher risk of fire in chemicals. Application Oil tankers, Chemical Tankers and so on.