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MAC Enterprises Inc

Serving the Aleutian Islands since 1982

 Office  1.907.581.2386   •   After Hours  1.907.581.1386   •   Cell  1.907.359.2386


MAC Enterprises is the only company with on-site divers available 24/7 from the Kenai Peninsula to Adak.


We have been providing OSHA Approved Commercial Underwater Welding and Diving services in the Aleutian Islands for over four decades!  ​

  • Underwater hull inspections and surveys

  • Dock repair, outfall line surveys, buoy maintenance

  • Underwater cutting and welding 

  • Propeller inspection, removal, installation and maintenance

  • Underwater electromagnetic testing

  • Zinc "sacrificial anode" installation and removal

  • Hull cleaning and scraping

  • Sea chest cleaning and scraping

  • Cofferdams on sea chests, discharges, hull plates and sonar tubes

  • Shaft seals

  • Valve repairs

  • Underwater hull surveys & inspections with video

  • Transducer maintenance and replacement

  • Stern tube sealing

  • Dock inspections and repairs

  • Zinc installation on boats, pipes and docks

  • Search and recovery of lost items

  • Mooring location repairs and maintenance

  • NOAA Tide Indicator inspections & maintenance

  • Ultrasonic surveys

Diving Clients Include


Trident Seafoods, Icicle Seafoods, Westward Seafoods • City of Unalaska  

Coastal Transportation • United States Coast Guard    

Department of Fish & Wildlife

Samson Tug & Barge • University of Alaska-Fairbanks

US Marshall Service • Wesmar


MAC Enterprises has on-site welders available 24/7.

Our welders are certified in AWS, API, and ARC with experience in MIG & TIG.

Experienced in Davis Bacon and Union requirement projects.

Welding Clients Include

Miss Leona F/V  •  State of Alaska    

The Ballyhoo F/V  •   Pavlof F/V

Turnigan Marine  •  Aleutian Beauty F/V

Vessel Security

Storms in the Bering Sea can bring winds over 140 mph, making daily vessel security an important element in peace of mind for vessel owners.


When you need to leave your vessel for an extended period, you need a trusted partner to perform the responsibilities of vessel security to ensure your vessel is properly cared for. No other vessel watch company has the insurance to protect your vessel.

MAC Enterprise offers Vessel Security Services for

$30.00 per day that include the following:​​

  • Daily walk through the entire vessel

  • Check shore power

  • Secure and report any activity

  • Tighten and adjust mooring lines

  • Respond to any alarms

  • Check water and gauge levels

Vessel Security Clients Include

 Northwestern  • 

Cornelia Marie  •  The Time Bandit  •  Saga

Summer Bay  •  Southern Wind  

Rollo  •  Far West Leader  •  Early Dawn 

Billikin  •  Arctic Dawn

Marine transport

If you require Marine Transport or Freight Forwarding projects, MAC Enterprises owns the Miss Alyssa Charter Vessel; a 43' Skookum with walk around decks, spacious outdoor decks and a boom weight capable.

We help government and private industries move everything from barrels of oil to building supplies and personnel.

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