. Commercial fisheries review. Fisheries; Fish trade. TRENDS AND DEVELOPMENTS. Fishing Vessel and Gear Developments EQUIPMENT NOTE NO. 8 — NEW HYDRAULICALLY-DRIVEN BLOCK SPEEDS HAULING CRAB-POT WARPS: A Seattle, Wash., company has recently patented and introduced a new type of power block designed to improve handling of crab- pot gear and long lines. The equipment con- sists of a hydraulically-driven aluminum block weighing approximately 130 pounds and having a bronze V-sheave that can be preset to accommodate lines from 15-inch to-g- inch in diameter (fig. 1). This block is sus- pended from a
. Commercial fisheries review. Fisheries; Fish trade. TRENDS AND DEVELOPMENTS. Fishing Vessel and Gear Developments EQUIPMENT NOTE NO. 8 — NEW HYDRAULICALLY-DRIVEN BLOCK SPEEDS HAULING CRAB-POT WARPS: A Seattle, Wash., company has recently patented and introduced a new type of power block designed to improve handling of crab- pot gear and long lines. The equipment con- sists of a hydraulically-driven aluminum block weighing approximately 130 pounds and having a bronze V-sheave that can be preset to accommodate lines from 15-inch to-g- inch in diameter (fig. 1). This block is sus- pended from a short boom that can be raised or lowered hydraulically. Besides handling the gear faster with less work, the block is said to eliminate line slip-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. National Marine Fisheries Service; U. S. Fish and Wildlife Service; United States. Bureau of Commericial Fisheries. [Washington] : National Marine Fisheries Service; [for sale by the Supt. of Docs. , U. S. Govt. Print. Off. ]
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