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BOAT CREW HANDBOOK USCG 2017

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BOAT CREW HANDBOOK USCG 2017 ( boat-crew-handbook-uscg-2017 )

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Boat Crew Handbook – Seamanship Fundamental A.32. Operation .............................................................................................................................................................. 6-23 A.33. Thrust and Directional Control .............................................................................................................................. 6-24 A.35. Cavitation .............................................................................................................................................................. 6-25 SECTION B. BASIC MANEUVERING........................................................................................................................ 6-26 Learning the Controls....................................................................................................................................... 6-26 B.1. Description .............................................................................................................................................................. 6-26 B.2. Obstructions / Hazards ............................................................................................................................................ 6-27 B.3. Helm Limits .............................................................................................................................................................. 6-27 B.4. Engine Control Action Check ................................................................................................................................... 6-28 B.5. Joystick Controls ...................................................................................................................................................... 6-29 B.6. Engine Control Recheck ........................................................................................................................................... 6-30 Moving Forward in a Straight Line .................................................................................................................. 6-31 B.7. Acceleration............................................................................................................................................................. 6-31 B.8. Direction Control ..................................................................................................................................................... 6-32 B.9. Planing ..................................................................................................................................................................... 6-32 B.10. Appropriate Speed................................................................................................................................................. 6-32 B.11. Bank Cushion and Bank Suction............................................................................................................................. 6-34 B.12. Bow Cushion and Stern Suction............................................................................................................................. 6-36 B.13. Wake Awareness ................................................................................................................................................... 6-36 Turning the Boat with the Helm / Tiller ........................................................................................................... 6-37 B.14. Description ............................................................................................................................................................ 6-37 B.15. Pivot Point ............................................................................................................................................................. 6-37 B.16. Propulsion Type and Turning ................................................................................................................................. 6-37 B.17. Vessel’s Turning Characteristics ............................................................................................................................ 6-39 B.18. Loss of Speed ......................................................................................................................................................... 6-39 B.19. Making Course Changes and Turns in Channels .................................................................................................... 6-40 Stopping the Boat ............................................................................................................................................ 6-42 B.20. Description ............................................................................................................................................................ 6-42 B.21. Using Astern Propulsion to Stop the Vessel........................................................................................................... 6-42 B.22. Using Astern Propulsion to Stop an Outboard Engine Vessel ............................................................................. 6-43 B.23. Using Full Helm to Stop Forward Way ................................................................................................................... 6-43 Backing the Vessel ........................................................................................................................................... 6-44 B.24. Description ............................................................................................................................................................ 6-44 B.25. Screw and Rudder.................................................................................................................................................. 6-44 B.26. Stern Drives and Outboards .................................................................................................................................. 6-46 B.27. Waterjets ............................................................................................................................................................... 6-46 Using Asymmetric or Opposed Propulsion (Twin-Screw Theory) ..................................................................... 6-47 B.28. Description ............................................................................................................................................................ 6-47 B.29. Holding a Course.................................................................................................................................................... 6-47 B.30. Changing Vessel Heading....................................................................................................................................... 6-47 Performing Single-Screw Compound Maneuvering (Single-Screw Theory) ..................................................... 6-51 B.31. Description ............................................................................................................................................................ 6-51 B.32. Back and Fill (Casting) ............................................................................................................................................ 6-52 Performing Duel Waterjet Maneuvering (Waterjet Theory)............................................................................ 6-53 B.33. Introduction........................................................................................................................................................... 6-53 Performing single Waterjet Maneuvering (Waterjet Theory).......................................................................... 6-58 SECTION C. MANEUVERING NEAR OTHER OBJECTS ................................................................................................. 6-62 C.1. Station Keeping........................................................................................................................................................ 6-62 C.2. Maneuvering ........................................................................................................................................................... 6-64 SECTION D. MANEUVERING TO OR FROM A DOCK.................................................................................................... 6-67 D.1. General Considerations ........................................................................................................................................... 6-68 D.2. Basic Maneuvers ..................................................................................................................................................... 6-68 D.3. Rules of Thumb ....................................................................................................................................................... 6-72 SECTION E. MANEUVERING ALONGSIDE ANOTHER VESSEL........................................................................................ 6-76 Determining Approach..................................................................................................................................... 6-76 E.1. Conditions ................................................................................................................................................................ 6-76 v

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