NIMASA STCW Tanker Familiarization Practice Questions - NIMASA STCW Tanker Familiarization Examination (Nigeria) Exam

Chemical tankers require specialized tank coatings (e.g., epoxy, phenolic, or stainless steel) to prevent tank corrosion and cargo contamination, whereas crude oil tankers typically use mild steel with basic anti-corrosive coatings. Crude oil tankers require heat-insulated pressurized steel containment vessels, whereas chemical tankers rely entirely on atmospheric structural double-bottom voids. Chemical tankers are constructed exclusively with structural aluminum alloys to reduce static charge generation, while crude oil tankers use high-tensile copper. There are no structural or coating differences; both vessel types carry cargoes interchangeably without tank preparation.