In order to undertake a survey, entry into cargo oil tanks
is required. Crude oil cargo tanks must be considered an "enclosed
space" and therefore all the recommendations contained in ISGOTT (International
Safety Guide for Oil Tankers and Terminals)footnote regarding enclosed space entry and gas freeing
should be strictly followed. For gas freeing and venting, reference
is made to ISGOTT for procedures and equipment for this purpose. Due
attention should also be paid to the Recommendations for entering
enclosed spaces aboard ships (resolution
A.864(20), as amended).