8-32 U.S. Navy Diving Manual — Volume 2 out to the starting point and completes a sweep in the opposite direction to sweep the other half of the circle. After a full 360-degree sweep is made, the diver returns to the starting point and moves out another increment and makes another 360 degree sweep in the same manner as the first. As more umbilical is let out the current exerts a greater total force on the exposed umbilical which makes moving more difficult. This method minimizes the force exerted on the umbilical by the current when it is exposed sideways to the current because it is far more effective for a diver to move directly into, and with, the current than across it. 2. If the effective range of the search is reached and the object is not found, the moor will have to be shifted. An accurate chart of the areas searched should be kept to avoid unnecessary duplication in the search and to ensure gaps in the search area are minimized. 3. Once the object of a search is located, it is recovered by the diver or marked. The tending diver can bring a marker line, lift line, or a buoy line out to the searching diver to attach to the object. Divers must ensure umbilicals and lines do not become fouled by following the umbilical back to the stage or decent line hand-over-hand. 8-10.4 Working Around Corners. When working around corners where the umbilical is likely to become fouled or line-pull signals may be dissipated, a second diver (tending diver) may be sent down to tend the lines of the first diver at the obstruction and to pass along any line-pull signals. Line-pull signals are passed on the diver’s umbilical to which they pertain. 8-10.5 Working Inside a Wreck. When working inside a wreck, the same procedure used when working around corners is followed, where each level penetrated may require a tending diver to relay line pull signals. Ultimately, the number of tending divers deployed depends on the specific situation, a sound risk assessment of the hazards, and the good judgment of the Diving Supervisor. Obviously, an operation requiring penetration through multiple deck levels requires detailed advanced planning in order to provide for the proper support of the number of divers required. KM-37 NS is the first choice for working inside of a wreck. However, use of MK 20 Mod 0 may be used if deemed safe. The diver enters a wreck feet first and never uses force to gain entry through an opening. Additional information for enclosed space diving can be found in Appendix 2C . 8-10.6 Working With or Near Lines or Moorings. When working with or near lines or moorings, observe the following rules: n Stay away from lines under strain. n Avoid passing under lines or moorings if at all possible; avoid brushing against lines or moorings that have become encrusted with barnacles.

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