Mainstream Commercial Diving

Vessel Support Services

Since formation, Mainstream Commercial Divers, Inc. (MCDI) has been providing commercial diving services to the inland river shipping industry. In fact, many of MCDI’s repeat customers are inland towboat/barge companies. MCDI has worked for all of the major inland shippers on the Mississippi, Ohio, Cumberland, and Tennessee Rivers.

MCDI provides a variety of services to the inland river shipping industry including:

  • 24-hour emergency service
  • Underwater inspections, repair, and salvage
  • Wheel obstruction removal
  • Underwater cutting and welding
  • Kort nozzle repair
  • Emergency rudder repairs
  • Stuffing box plugging for seal change
  • Sea chest cleaning and repair
  • Keel cooler repairs
  • Diver operated dredging under fixed facilities

A partial listing of our equipment used for servicing the marine industry includes:

  • Surface-supplied commercial dive stations with voice communications
  • Heavy built work vessels
  • Truckable lift barge
  • 30-ton rough terrain crane
  • Truckable sectional barges
  • 2", 3", 4", 6", and 8" pumps
  • lift bags with the capability to lift over 40 tons
  • Pre-made barge salvage hatches
  • Underwater ultrasonic thickness testing equipment
  • Equipment to perform soft patches
  • Hull cleaning equipment
  • Underwater cutting equipment
  • Side scan sonar
  • State-of-the-art underwater video systems with integrated communications, lighting, and topside console

Towboats & Vessels:

MCDI has performed an extensive amount of inspection and maintenance work on large commercial vessels and barges including:

  • Hundreds of successfully completed wheel jobs
  • UWILD and Alternate Hull Exams
  • Extensive experience with barge and vessel salvage
  • Barge patching
  • Thousands of inspections of all underwater components of large commercial vessels including towboats, barges, passenger vessels, and casino boats
  • Non-destructive testing on all types of waterborne structures, including vessels

In addition to our salvage capabilities, MCDI also has side scan and sector scan sonar survey equipment, integrated with differential GPS as well as towable underwater metal detectors to aid with accurately determining the exact location, including latitude and longitude, of the sunken vessels or lost equipment.

Casino Services:

MCDI has years of experience performing diver operated dredging operations under riverboat casinos and related facilities. Our dive crew members are experienced in the operation and maintenance of the large pumping equipment, which is necessary to perform dredging operations quickly and efficiently.

In addition to dredging, MCDI has also performed various underwater repairs and inspections including UWILD and Alternate Hull Exams. MCDI dive crews are experienced in obtaining ultrasonic thickness readings and performing underwater visual, tactile, and video inspections of vessel hulls and appurtenances. 

MCDI realizes that your customers do not want to be disturbed by our work. Therefore, our crews are trained and instructed to perform their work with minimal impact on daily operations.

We have performed a variety of projects at riverboat casino facilities including:

  • Annual maintenance diver operated dredging
  • Soundings underneath barges and casino boats
  • UWILD inspections, Alternate Hull Exams, and ABS inspections
  • Fabrication and installation of welded repair boxes from inside the barges
  • Underwater welding for installation of new anodes
  • Sea chest cleaning and inspection

 If you have any questions regarding our services, capabilities, or experience, please contact us.