Types of Boats Alaska Department of Fish and （类型的船鱼和阿拉斯加）.pdf

Types of Boats Purse Seiner Purse seiners catch primarily pink salmon and its power block, the net stacked on the back, herring by encircling them with a long net and and the power skiff that is often seen riding pig- drawing (pursing) the bottom closed to capture gyback aboard the vessel’s stern while it is trav- the fish. The net is first stacked on the stern of eling. When fishing, of course, the circle of floats the boat and then played into the water while on the surface of the water, and the power skiff the boat travels in a large circle around the fish. assisting with the operation, are sure giveaways. The far end of the net is attached to a power Seine-caught salmon are delivered in-the-round skiff, which holds the net while the seiner com- (whole) to buying stations and canneries where pletes the circle. The top of the net stays on the they end up as canned and frozen products. surface of the water because of its float line— Herring are delivered to processing plants where thousands of colorful floats—and the bottom of they are either stripped of their roe (eggs), or the net falls vertically because of its weighted packaged as bait for other commercial fisheries; lead line. As a result, the net hangs like a cur- e.g., the longline fisheries and the crab fisheries. tain around the school of fish. The vessel crew Salted herring roe, called kazunoko, is shipped then purses its bottom with a purse line. The to Japan where it is a high-priced delicacy. lines, and thus the net, are retrieved through a hydraulic power block (winch). Once most of the net has been retrieved, with the remainder of it lying in a bag alongside the vessel, the fish are dipped from the bag and into the vessel’s hold. For large catches of herring, a buying vessel