AdvanTec Marine

AdvanTec Marine is the parent brand to Diamond Sea Glaze, Freeman Marine, Pacific Coast Marine, Steelhead Marine, and USA Sliding Doors. Our brands specialize in the design, engineering, and manufacturing of specialty application marine closures.

We are one of the largest marine manufacturers in the world. We have geographic locations in the US and Canada, and ship to over 50 countries worldwide.

Our customer base includes 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 and solutions are conceived, designed, engineered, and manufactured here in North America. For over 40 years our brands have collectively been the leader in innovation and creative manufacturing systems.