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Parts of Accommodation Ladder
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Seaman - Military manual for the Seaman rate
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Parts of a Boat Boom
With this equipage rigged, we are ready to lower the ladder. Attach the falls to a sling on the lower platform. Make sure the hook is moused so the sling does not fall out of the hook. If outriggers were used or if pad eyes and two-fold are holding the ladder, we must lay back on the falls to take the weight of the ladder off of them. Swing the outriggers in and or disengage the ladder from the pad eyes and remove the two-fold. The weight of the ladder is now on the falls attached to the lower platform and the  attachment  points  of  the  upper  platform. The accommodation ladder should be lowered smoothly  and  it  must  always  be  controlled  in  its descent.  As  the  ladder  lowers  into  position,  the  pendant will extend itself between the attachment point and the bail. Keep an eye on the bridle and bail to make sure that they are not fouled as the ladder is lowered. The weight of the ladder will shift to the pendant, the bail, and the bridle when the ladder is in its down position. A crew member must now go down the ladder and rig the shoes. Shoes on an accommodation ladder are posts that slide out from the lower platform and act as fenders to keep the ladder in the proper position off the side of the ship. The shoes are secured by pins set in from the top of the lower platform into pre-drilled holes in the shoes. Turnbuckles  are  now  rigged  from  the  lower  platform  to the side of the ship. They prevent the fore and aft movement  of  the  ladder. While this is being done, another sailor rigs the boat line. The boat line is nothing more than a block rigged under the forward outboard corner of the upper plat- form. It acts as a sea painter to help boats making landing at the ladder. The rails of the ladder are not set up and secured into position. Remember   that   in   some   of   these   rigging procedures,  personnel  will  be  working  outside  of lifelines and over the side of the ship. It is absolutely necessary for these personnel to be in life jackets and safety harnesses with proper safety lines rigged. While underway,   the   Commanding   Officer   must   give permission before anyone can work over the side. Pneumatic fenders are now lowered over the side of the  ship.  They  are  positioned  fore  and  aft  of  the accommodation ladder to protect the ladder and the ship from  boats  coming  alongside. When  you  complete  the  steps  in  rigging  the accommodation ladder, you are ready to receive boats alongside. One of the marks of a smart efficient ship, 4-20 when going to anchorage is not only the proper use of her ground tackle but the timely manner in which she has  her  accommodation  ladders  and  boat  boom  rigged. As previously mentioned, some accommodation ladders can be modified for use on a pier or barge. To do this, the lower platform and the H-Frame are left off, and a roller and a safety step are installed at the bottom of the ladder, as shown in figure 4-19. The safety step assembly eliminates the foot hazard caused by the ladder  roller. BOAT BOOMS LEARNING OBJECTIVES: Define boat boom. Describe the purpose of the boat boom. Ships that are at anchor, or are moored to a buoy, rig out their boat booms for the purpose of mooring their boats well clear of the side. This method of securing is known as “hauling out to the boom.” Forward booms are called lower booms, after booms are called quarter booms. The boat boom (fig. 4-20) is a spar secured by a gooseneck to a pin on the side of the ship, which allows free motion fore and aft. The outboard end of the boom hangs from a wire and tackle combination called the topping lift. Nylon or wire rope forward and after guys control  the  fore-and-aft  motion. A strong line called a guess-warp leads from well forward on the ship, out through a block in the end of the boom, and ends in a metal thimble through which boats can reeve their bow lines. A toggle is seized between strands of the guess-warp above the thimble to keep it from running up (out of reach) when a boat lets go. One or more Jacob's ladders from the boom permit boat  crews  to  come  aboard. Figure 4-19.–Accommodation ladder rigged to pier.

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