Port Angeles, Wash. boatbuilder BRIX Marine announced the forthcoming launch of the 4615-HTC, a new addition to its line of purpose-built vessels.Currently undergoing construction, the 4615-HTC LandingCat, named Chenega, will have 46-foot-long hull (40 feet at the waterline) and will be about 50 feet long overall, with a 15-foot beam.