nit 1 Dover Straight Sailing Directions Unit 2 Guide to Bahrain Port Entry Unit 3 Nautical Publications Unit 4 Charts and Notices to Mariners Unit 5 Radar and Compass Unit 6 AIS ECDIS GPS & VDR Etc Unit 7 GNSS GPS SSAS & LRIT Unit 8 IBS & BRM Unit 9 Ship Maneuvering Unit l0 COLREGs Unit 11 Fire Fighting at Sea Unit 12 Life Saving & Survival at Sea Unit 13 Weather Reports Unit 14 Deck Logbook Unit 15 Official Logbook and Its Records