Home Inflatable Kayak Review: Sea Eagle 370 The five tubes of the I-beam hull provide a rigid platform constructed of sun- and saltwater-resistant 38 mil PolyKrylar (K80 PVC) that’s rated to withstand up to class III rapids. Two fins and the side chines of the hull help it to paddle in a straight line. | Photo: Colin Field

The five tubes of the I-beam hull provide a rigid platform constructed of sun- and saltwater-resistant 38 mil PolyKrylar (K80 PVC) that’s rated to withstand up to class III rapids. Two fins and the side chines of the hull help it to paddle in a straight line. | Photo: Colin Field

Blue and white inflatable kayak, with paddler on the water

The five tubes of the I-beam hull provide a rigid platform constructed of sun- and saltwater-resistant 38 mil PolyKrylar (K80 PVC) that’s rated to withstand up to class III rapids. Two fins and the side chines of the hull help it to paddle in a straight line. | Photo: Colin Field

The bow and stern spray decks inflate to provide added buoyancy and help shed waves. They’re lashed onto the deck with ropes that double as safety grab lines and a place to tie gear. There is also a plastic-molded attachment for a bowline.  | Photo: Colin Field