Identify Environmental And Operational Hazards
Underwater environmental conditions have a major influence on the selection of divers, diving technique, and the equipment to be used. In addition to environmental hazards, a diver may be exposed to operational hazards that are not unique to the diving environment. This section outlines the environmental and operational hazards that may impact an operation. 6-6.1 Underwater Visibility. Underwater visibility varies with depth and turbidity. Hori zontal visibility is usually quite good in...
Normal And Maximum Limits For Air Diving
MK 21 MOD 0 diving equipment, maximum working limit without Emergency Gas Supply (EGS) MK 20 MOD 0 equipment surface-supplied Maximum depth for standby scuba diver using a single cylinder Open-circuit scuba with single scuba bottle Open-circuit scuba, normal working limit Open-circuit scuba, maximum working limit with Commanding Officer's permission MK 21 MOD 1 (air) diving equipment with EGS, normal working limit MK 21 MOD 1 (air) diving equipment with EGS, maximum working limit, exceptional...
Diver Tender
6-9.10.1 Diver Tender Responsibilities. The tender is the surface member of the diving team who works closely with the diver on the bottom. At the start of a dive, the tender checks the diver's equipment and topside air supply for proper operation and dresses the diver. Once the diver is in the water, the tender constantly tends the lines to eliminate excess slack or tension (certain UWSH tasking may preclude this requirement, e.g., working in submarine ballast tanks, shaft lamination, dry...
Equipment Authorized for Navy Use Equipment procured for use in the US
Navy has been tested under laboratory and field conditions to ensure that it will perform according to design specifications. A vast array of equipment and tools is available for use in diving operations. The NAVSEA 00C Diving Equipment Authorized for U.S. Navy Use (ANU) list identifies much of this equipment and categorizes diving equipment authorized for U.S. Navy use. 6-8.2 Air Supply. The quality of diver's breathing air is vitally important. Air supplies provided to the diver in tanks or...
