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SABOT

SABOT. Standardized Auxiliary Boat Operations Training Ninth District - Eastern Region COMO. Lew Wargo, Sr. DSO-OP/CQEC 15 April 2014 ALONGSIDE TOWING. SABOT. ALONGSIDE TOWING. REFERENCES. Boat Crew Seamanship Manual, COMDTINST M 16114.5(series) Chapter 17

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SABOT

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  1. SABOT Standardized Auxiliary Boat Operations Training Ninth District - Eastern Region COMO. Lew Wargo, Sr. DSO-OP/CQEC 15 April 2014 ALONGSIDE TOWING

  2. SABOT ALONGSIDE TOWING

  3. REFERENCES • Boat Crew Seamanship Manual, COMDTINST M 16114.5(series) Chapter 17 • Auxiliary Boat Crew Qualification Guides, Vol. I II, COMDTINST M16794.52 & 3 • SABOT Job Aid (Section “H”).

  4. TERMINAL PERFORMANCE OBJECTIVE In calm seas, (<1 foot), in day or night, given a scenario, transfer a vessel from stern tow to an alongside tow and moor it to a dock or Pier no without prompting or the use of a Reference.

  5. TOW RIG Tow rig/towing system is defined as a towline, pendant, double leg-towing bridle, or kicker/skiff hook assembly.

  6. CAUTIONS Opening and closing maneuvers should Be conducted with caution and within the limitations of vessel’s propulsion system. Approaches may be modified to limit Maneuvering. Corrections should be based on evaluated risks and conditions.

  7. APPROACHES • There are two methods for converting a vessel from an astern to an alongside tow: • 1. Free Approach: Easier to do and keeps your deck clear of towline. • 2. Back-down Approach: Allows you to maintain control of tow at all times. Hazard of backing over towline.

  8. FREE APPROACH A. Slowly bring the astern tow to a complete stop. (Done in increments) B. Disconnect the towline from the towed vessel while crew quickly retrieves towline keeping it free of the props C. Response boat comes around and approaches D/V, stopping in the proper position for the alongside tow.

  9. FREE APPROACH

  10. BACK-DOWN APPROACH • Slowly bring the astern tow to a complete stop. • Slowly back the tow-boat down to the side of the towed boat while keeping the towline clear of the props. This will require angling the tow-boat away from the towline while backing. Crew must be diligent to keep towline clear of props

  11. BACK-DOWN APPROACH

  12. ALONGSIDE TOWING • Four methods to start: • 1-2-Go Method (Can not go in reverse with this method) • 1-2-3-Go Method • 1-2-3-4-Go Method • Note: In an emergency you can start with just the #1 line.

  13. #1 LINE & GO

  14. 1-2-Go • Connect lines 1 & 2 then start towing: • Line #1 is the bow to bow line and is always connected first. (Do not draw too tight, keep boats parallel to each other) • Line #2 is the tow strap going from the bow of the tow-boat aft to the D/V • Used when the towed boat is in danger

  15. 1-2-GO DIAGRAM

  16. 1-2-3-Go • Connect lines 1, 2 and 3 then tow. • Line #1 is bow to bow (always connected first) • Line #2 (Tow Strap) is your bow to astern of towed boat • Line #3 is the stern of your boat to the far side stern of the towed vessel

  17. 1-2-3-GO DIAGRAM

  18. 1-2-3-4-Go • Line #1 is bow to bow (Always connected first) • Line #2 (Tow Strap) is bow of tow-boat to stern of towed boat. • Line #3 is stern of tow-boat to forward on D/V • Line #4 is stern to stern

  19. 1-2-3-4-GO DIAGRAM

  20. PREPARATION Determine side from which to tow. Consider: A. Objects on side of each vessel B. Side that Towed vessel will moored C. Coxswain’s visibility

  21. PREPARATION D. Brief crew on procedure: E. Discuss approach method, Free or Back-Down. F. Side Tow method to be used G. Safety of personnel on both vessels

  22. PREPARATION H. Assign crew responsibilities I. Prepare and inspect alongside towlines J. Determine and place fenders in anticipation of contact points

  23. BACK-DOWN TRANSITION A. Maintain positive control of the tow and towline by incrementally reducing the speed of the tow until all headway off. B. Maintain position in the maneuvering zone while backing down into optimum position.

  24. BACK-DOWN TRANSITION C. Coordinate to break the tow bitt/cleat and haul in the slack keeping clear of the screws. D. Crew must communicate with coxswain on towline status at all times. E. Maintain position in the maneuvering zone while backing into the optimum position.

  25. FREE APPROACH A. Maintain positive control of the tow and towline by incrementally reducing the speed of the tow until all headway off. B. Coordinate to break the towline on the towed vessel and haul in the slack keeping line clear of screws. C. Communicate line commands to crew.

  26. CONNECT ALONGSIDE LINES A. Position towboat in optimum position alongside D/V. B. Tow should be positioned with it’s stern about 1/3 of the way forward from towboat’s stern. That is, if the Towboat is 24 feet long, the stern of the D/V should be approximately 8 feet forward of the stern of the towboat.

  27. CONNECT ALONGSIDE LINES C. Contact the vessels at the fender contact points D. Pass alongside tow lines always starting with LINE #1 E. In an emergency you can start towing in a forward direction with line #1 or #1 and #2 (You can not back with only 1 or 2 lines.)

  28. CONNECT ALONGSIDE LINES F. Coxswain directs the crew with standard line commands. G. Adjust the tension on the alongside towlines. (Discuss methods) Caution, keep all to body limbs out from between vessels!

  29. ALONGSIDE TOWING A. Test maneuverability of tow before getting into close quarter situations. B. Maintain safe speed C. Check on status of tow D. May need to place crew on tow as a lookout.

  30. MOORING A. Brief both crews on docking procedures B. Prepare both vessels for docking with fenders, mooring lines and boat hook ready for use. C. Moor tow Safely! It doesn’t have to be in their dock! Don’t take unnecessary risks, Moor where it is safe.

  31. MOORING D. The side you moor on is the coxswain’s choice considering which is larger, where you have more control, and safety. E. Gather pertinent data for reports. • Debrief crew. (What went right, wrong and/or what could be improved) (Start with input from least experienced and end with coxswain.)

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