The Eskimo Kayak Pacific Eskimos were known for developing the two-hatch kayak. Sometimes the boat was enlarged into the three-hatch form, as pictured above, to accommodate three passengers. Because of its speed and maneuverability, the kayak was particularly effective fo r hunting sea otters. Harbor seals and walruses, both important economic sources for the Eskimo, were also harpooned from kayaks. Kayaks were made by sketching animals skins over a wooden frame, also pictured. They were designed to resist capsizing. but if a kayak did tip over, a skillful oarsman could bring it upright almost immediately without letting in much water. Often a hatch would have a jacket sewn into it which the hunter could wear, thus making the kayak virtually watertight from all angles.