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AdvanTec Marine is the parent brand to Diamond Sea Glaze, Freeman Marine, Pacific Coast Marine, Steelhead Marine, and USA Sliding Doors who specialize in the design, engineering, and manufacturing of specialty application closures. We are one of the largest marine manufacturers in the world, have geographic locations in the US & Canada, and ship to over 50 countries worldwide. Our customer base include North American & International Navies, Governments, Militaries, Commercial Vessel and Super Yacht Builders. We are a growing team of close to 300 people, and all of our products/solutions are conceived, designed, engineered and manufactured here in North America.

For over 40 years our brands have been collectively the leader in innovation and creative manufacturing systems and processes. We are committed to delivering solutions to meet customer requirements using our process of customer consultation, creative and collaborative thinking, innovative design solutions, and world class manufacturing systems. No matter what Vessel Type, Size or Industry your working on, we have the product you need. Our goal is to Build, Supply & Support the Finest Equipment in the industry.

We offer after Sales Service, Installation & support for all products sold.

Who We Serve

The AdvanTec Advantage

  • Reliability
    Over 120 year of collective experience in the design, engineering and manufacturing of closures in North America.

  • One Stop Solution
    One of the largest closure manufacturers in the world delivering class approved projects, standard and custom closures, cranes, portlights, hatches, and accessories for all kinds of marine application.

  • Stability
    A company that will stand behind its technology and is going to be around for the life of its product.

  • Serviceability
    Over 25 engineers and a host of technical staff spread in key geographies for faster response time on technical matters.

  • Expertise
    Introduced a myriad of solutions that have become industry benchmarks including aluminum cast hatches, ultra-lightweight cranes and DiamondFrit™ glass.

  • Global Presence
    Solutions exported to over 50 countries to a diverse range of clients from international navies and defense equipment.
  • State Of The Art Facilities
    State of the art facilities in both the USA and Canada.

  • Long Lasting Quality
    Industry standard manufacturing brand name and quality to last longer and save you time and money.

  • Service and Maintenance
    Anywhere in the world, anytime.
  • On time delivery, GUARANTEED
    Quick and efficient through the entire process from design to manufacturing.

Have a project?

At AdvanTec we are committed to delivering manufacturing solutions across various industries to meet customer’s requirements. With industry specialists with collaboratively over 50 years experience, you will matched with the expert for your project that will work with you closely through the complete manufacturing process.

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