16-10.3 A gradually decreasing seabottom grade from shore high water line to proposed barge location provides less
wave action at the beach, fewer natural obstructions and a better nesting area for the barge's bottom-laid shore discharge
16-10.4 An area with few, if any, underwater obstructions or obstacles, reduces the probability that the barge, its anchors
and cables, or water discharge hose could be damaged.
16-11 Support requirements
16-11.1 Barge site must be within easy range of personnel support facilities. Crewmembers require messing, billeting,
and associated support activities either ashore or on another vessel. The workboat is normally used to change crews
onboard the barge once or twice in every 24 hours. It has a range of less than 50 miles and a cruising speed of less than
16-11.2 Barge consumes large quantities of POL and must be replenished every 5 to 8 days.
16-12 Anchoring site selection
16-12.1 Obtain navigational chart of areas for proposed anchoring sites. Use above requirements to select potential sites
based on chart data.
16-12.2 Survey sites by helicopter or barge workboat. If possible, have divers examine tentative sites for underwater
hazards or obstructions.
16-12.3 Select site and mark it with anchoring floats. Mark chart showing approximate deployment location for barge and
16-12.4 Provide chart to tugmaster prior to moving barge to location.
Section V. Anchoring methods
16-13 General. Each barge is equipped with four anchors and winches and may be anchored with four, two, or one
anchors as the situation requires. Normally, the barge is anchored with four anchors. If information on the selected
anchoring site area indicates that anchors hold well and sea, wind, and current forces are minimal, two anchors may be
used. The barge may ride easier with only two anchors deployed. If sea direction is directly towards the shore, bottom
conditions provide for secure anchoring, and wind and currents are minimal, one bow anchor may be used. In this case,
the water discharge hose acts as a stem anchor.
16-14 Anchoring with four anchors
Barge is towed in close to designat ed anchoring site and tug casts off the tow.
Based on wind and sea conditions, tug then positions barge on its hip (Figure 16-1) so tug is on
downcurrent side as tug moves barge towards shore (Figure 16-3).
If waterdepth permits, tug moves barge over position for upcurrent stem anchor (Figure 16-4). If
waterdepth does NOT permit tug to move in this close to shore, see modified anchoring procedures in
Anchors are stowed against barge fore and aft bolsters and held in place with the
flukes under the bolsters and anchor winches maintaining a tight cable to hold
them in place. When anchoring barge, winches are turned on and anchors are
powered down from their stowed position. For detailed procedures on anchor
winch operation, see Section VII, anchor winch procedures.
Attach a marker line and buoy to anchor swivel. This not only marks anchor location but also helps
retrieve the anchor.