Boat speak terms we use to describe our designs. this glossary was originally published in our webletters. if you have any suggestions for additions, or corrections. 1-2 person/600 lb. capacity; uv-resistant 600d polyester ; duratex heavy duty polyester reinforced hull fabric ; hb drop stitch floor (inflates to 12 psi). A kayak is a small, narrow watercraft which is propelled by means of a double-bladed paddle. the word kayak originates from the greenlandic language, where it is the.