Underwater Cleaning
The task of removing marine growth from boat hulls,
diffuser pipes, seawater intakes, keel coolers, propellers and shafts,
grates and slides, etc. This is normally done manually with various
hand tools adapted to the situation.
3
& 4
Man Surface Supplied Air Diving
A crew consisting of a dive supervisor, primary diver,
safety diver and tender/profiler to carry out diving operations in
accordance to OSHA, federal, state and/or USACE Guidelines. A 6x10
trailer with surface supplied air cascade system and communications
is set up at the dive site to conduct the dive. Equipment can be transferred
to a floating platform if required. Crew works mostly within the confines
of North Carolina doing emergency jobs for the USACE.
Mechanical
Work/Repairs
Practically
anything that can be done on dry land can also be done underwater.
Most common are prop, shaft, and cutlass bearing
changes to yachts suffering from grounding damage. I carry a full assortment
of tools with me at all times to cover 90% of required tasks including
pullers to handle 3 ½” shafts, hydraulic rams to 50 tons,
pneumatic drills and grinders, etc.
Pipeline & Cable
Installation/Repair
The process of laying in cable or assembling pipeline
at a desired depth. Normally this depth is below substrate and has
to be trenched in with a hand dredge.
Refloating
Sunk Vessels
The process of using inflatable air bags to bring
a sunken vessel (or other object) back to the surface. I have in
stock various sized marine salvage air bags with a combined total
capacity of 40,000 lbs. along with necessary slings, hoses, straps,
manifold, and compressor to complete the job.
Salvage
Cutting
(exothermic & hydraulic)
Consists of 3 basic types:
1) Light cutting of cable, chain, rope, wire using normal hacksaws,
bolt cutters, etc.
2) Cutting of wood, pilings, bulkheads, and timbers using a Stanley
CS-11 hydraulic chainsaw with 18 hp hydraulic power-pack
3) Cutting of steel, brass, stainless, concrete using a Broco BR-22
Exothermic cutting torch. Two oxygen cylinders and 200 rods are
kept on hand at all times for emergencies.
Search & Recovery
(includes
metal detection)
Proven search patterns and techniques are employed
to conduct a consistent and systematic search of an area to locate
a lost item. Actual search may originate with a witness account
of LKP or GPS coordinates. Metal detectors may be used for small
items or items buried in the sand.
Contaminated Water Diving
Catfish Diving Company offers inspection and repair of waste water
treatment plants.
Inspections/Video
Surveys
An
inspection consists of a detailed survey and report of an item
in question. It is usually conducted to industry accepted Level
I, II, or III. An Ikelite VHS video camera with light is used to record underwater
scenes for surface viewing. Legible videos have been produced with
visibility less than 2 feet. A “fisheye” connected by cable to a surface 5-inch
monitor may be carried down by diver and held in position for topside
personnel to immediately visualize the desired item.
Hydrographic
Surveys
Catfish Diving Company offers professional hydrographic
surveys. All surveys are carried out according to standard
engineering practices. Landon Younce, PE is on staff to over see
operations and to provide finished graphics.
