Seaboard??

[chesapeake724]

CPG Seaboard = King Starboard = UV stabilized High Density Polyethylene (HDPE). Plastics distibutors that you can buy UV stable HDPE are almost always cheaper by a longshot (like 40% of the cost) than buying Starboard from West Marine, BoatUS, etc. No, it's not a good coring material because stuff doesn't stick to it too well. Being high density, the material isn't porous to give resin, adhesives, etc. something to bond to. It's great for making things out of, that are mechanically fastened to the boat.