Otter trawl definition

Otter trawl means a trawl with its mouth kept open by means of boards or doors on each side.
Otter trawl means a funnel-shaped net with wings, a throat section and cod or bag end that is dragged or towed on the bottom or off of the bottom by 1 or more vessels. Floats and weights are utilized to keep the mouth of the net open. To spread the net, each wing is fastened to an "otter" board or trawl door. Each door is fitted with chains that can be attached to a towing cable from the trawling vessel. The resistance of the door at different angles forces them to pull in opposite directions and keeps the mouth of the net opened.

Examples of Otter trawl in a sentence

  • Otter trawl Mesh size: Otter trawlers that land or possess 100 pounds (45.4 kg) or more of Summer flounder per day from May 1 through October 31; or 200 pounds (90.8 kg) or more of summer flounder per trip from November 1 through April 30, must fish with nets or combinations of nets that have a minimum mesh size of 5.5 inch (14.0 cm) diamond, or 6 inch (15.2 cm) square mesh applied throughout the body, extension(s) and cod end portion of the net.

  • State regulations may apply that are more restrictive than federal regulations.(b) Violation of this subsection is a gross misdemeanor, punishable under RCW 77.15.520.(2) Otter trawl and beam trawl.

  • Consideration should be given to an administrative reorganization moving the supervision of the Information Technology Supervisor to the Director of Financial Affairs to allow the focus of the Senior Supervisor of School Improvement to focus efforts on the provision of instructional services.

  • These alternate collection methods are necessary because larger fish, such as older Atlantic croaker, are able to avoid an Otter trawl, or are found in un-trawlable habitats such as shallow water, along marsh edges, and over oyster reefs.

  • Otter trawl surveys should not be exclusively employed for baseline surveys, as turbines and cables may prevent the use of otter trawls after construction.

  • Otter trawl fishing effort by sediment type within the SBNMS (1994-1995), as determined from monthly standardized shipboard survey sightings, was gravel 25.84%, sand 36.10% and mud 38.06%, (total n=200).

  • Otter trawl samples must be collected between one hour after sunrise and one hour before sunset.

  • In addition to the increase in minimum mesh size for square mesh (Section 3.1.4), the Council proposes the following restriction on trawl gear:Maximum roller gear size : Otter trawl vessels fishing in Blocks 124, 125, 132, 133, 139 and 140, and the parts of Blocks 131 and 123 west of 69°50’ will be limited to a maximum diameter of 12 inches for roller and rockhopper gear.

  • Otter trawl selection curves are provided for winter flounder for four combinations of square mesh codends and grate sizes, and for cod for two of these, although data for cod are scant.

  • Otter trawl vessels possessing Loligo squid that are subject to the minimum mesh size may not have ‘‘available forimmediate use’’ any net, or any piece of net, not meeting the minimum mesh size requirement, or any net, or anypiece of net, with mesh that is rigged in a manner that is inconsistent with the minimum mesh size.

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