Planning And Estimating Guides

To assist in the planning and estimating process, information regarding the manpower, productivity, equipment, and materials required to carry out various tasks is provided throughout the manual. This information has been developed from a variety of sources including past UCT operations, NFESC and proprietary test results for specific equipment, manufacturers' recommendations, and commercial practice. The information obtained from these sources has been adjusted to conform with typical UCT operations. The information provided is intended to be a helpful reference and is not intended to establish new procedures.

All UCT operations must be carried out in accordance with established UCT procedures and the U. S. Navy Diving Manual.

The planning and estimating information herein must be used with sound judgment and modified as the user's experience suggests. Every task is different and there is no substitute for hands-on experience in planning new operations.

Table 1-1

Example Potential Contacts for Environmental Permitting

Table 1-1

Example Potential Contacts for Environmental Permitting


Local Office



Army Corps of Engineers

Ventura Office (805) 641-2935

Discharging, dredging navigable waters

United States Coast Guard

Long Beach Office of Aids to Navigation (310) 980-4383 X501

Publish "Notice to Mariners" Marine safety

Environmental Office (415) 244-3713

Environmental assistance


California Coastal Commission

San Francisco Federal Consistency (415) 904-5280

Manage and preserve California's coastal zone

California Department of Fish and Game

Long Beach Environmental Services Office (310) 590-5174

Protection of marine animals

California Water QualityControl Board

Los Angeles District (213) 266-7500

Water quality, discharging


Channel Islands Nat'l Park

Ventura Harbor (805) 658-5700

San Miguel, Santa Rosa, Santa Cruz, Anacapa, and Santa Barbara Islands

Channel Island Nat'l Marine Sanctuary

Santa Barbara (805) 966-7107

All resources 6 miles out from the islands mentioned above

Port Hueneme Port Operations

(805) 982-8561

Harbor operations

Ventura Harbor Master

(805) 642-8618

Harbor operations

Santa Barbara Harbor Master

(805) 564-5520

Harbor operations

1.5.1 Manpower

Manpower or crew size estimates provided in this manual include direct labor only (i.e., only the labor that is actually expended directly on assigned construction tasks). Direct labor is that which is used to produce the end product itself. These estimates do not include overhead labor, which does not contribute directly or indirectly to the work.

1.5.2 Productivity

Productivity estimates are based on good working conditions, a UCT with average experience and capability, and the assumption that the entire crew has completed at least the Underwater Construction Basic Technician training course. In general, the UCTs should be familiar with and have some experience working with all of the equipment and tools listed for the task. The estimates do not account for the extra time that will be required to carry out the first few tasks as the "bugs" are worked out. Productivity decreases can be expected at the end of a long work day or when the divers have been in the water, particularly cold water, for a long period of time.

The U.S. Navy Diving Manual and experienced UCT personnel should be consulted to determine productivity factors for unusual operational situations. In calculating the total time required to complete the project, the productivity must be adjusted to suit the actual conditions anticipated. Allowances must be made for setup and préfabrication time, startup time, relocation time, equipment downtime, weather downtime, ship traffic downtime, cleanup time, and packing time. The productivity rates should not be taken at face value but should be adjusted based on sound judgment and the user's experience. Have experienced personnel review the estimates.

1.5.3 Equipment

Equipment listed includes only the major pieces required specifically to carry out a task. The lists do not include: the tools and gear required to conform with standard UCT procedures and the U.S. Navy Diving Manual; the tools and equipment that should be taken on virtually every construction project, such as welding and cutting equipment, rigging equipment, etc.; and the tools required to maintain the equipment. For these tools refer to the operation and maintenance manuals for the specific equipment. When equipment is listed, all of its support equipment should also be included (e.g., oxygen arc cutting torch should include oxygen regulator, oxygen cylinders, supply hoses, DC welding machine, DC safety switch, grounding clamp, and welding cables).

1.5.4 Materials

Materials listed include only those directly required for the specific task and do not include those required to conform with standard UCT procedures and the U.S. Navy Diving Manual. Fuels and lubricants, welding rods, nails, and other consumables that are required on virtually every construction project also are not listed.

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