Watermark Marine Construction

Watermark Marine, founded in 1990, is known as New Hampshire’s premiere marine construction contractor. Our family of businesses today includes the full-service marine construction company, Watermark Marine Construction, a retail-marine supply ships store, Watermark Marine Supply Store, a residential construction company, Clearwater Construction, a full service dive shop, Central NH Divers, and a marine line manufacturing company, Knotical Marine Lines.