Here’s the required classes, many of these you sould already have.
(i) Medical first-aid provider.
(ii) Radar observer.
(iii) Search and rescue.
(iv) Basic and advanced firefighting in accordance with §11.303 of this subpart.
(v) Proficiency in survival craft and rescue boats other than fast rescue boats (PSC) or proficiency in survival craft and rescue boats other than lifeboats and fast rescue boats (PSC-limited).
(vi) Visual signaling.
(vii) Bridge resource management (BRM).
(viii) Terrestrial and celestial navigation, and electronic navigation systems.
(ix) Watchkeeping, including International Regulations for Preventing Collisions at Sea (COLREGS) and IMO standard marine communication phrases (SMCP).
(x) Cargo handling and stowage.
(xi) Ship handling.
(xii) Stability and ship construction.
(xiv) ARPA, if serving on a vessel with this equipment.
(xv) GMDSS, if serving on a vessel with this equipment.
(xvi) ECDIS, if serving on a vessel with this equipment.