MGN 390 Construction Standards for Offshore Support Vessels and Other Special Ship Types
This notice establishes guidance for the construction and operation of special ship types for which the provisions of the safety and pollution prevention conventions SOLAS 1974/88, MARPOL 73/78 and ICLL 66/88, as implemented in United Kingdom legislation, may be inappropriate and from which they may therefore be partially exempted on the basis of compliance with various resolutions of IMO.
Such special ship types may include offshore supply vessels, offshore support vessels equipped for well intervention duties, derrick and pipelay barges, research vessels and other vessels when undertaking similar work.
Source: MCA