Otter trawl definition

Otter trawl means a trawl with its mouth kept open by means of boards or doors on each side.
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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 one 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 doors at different angles forces them to pull in opposite directions and keep the mouth of the net opened.
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Examples of Otter trawl in a sentence

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

  • The purpose of these analyses was not to argue that video club participation would affect teachers nominate.

  • 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.

  • Otter trawl licenses used to be the most popular gear but have since been replaced by skimmer net licenses.

  • Otter trawl surveys may be required to characterise the baseline environment at up to 30 locations across the Proposed Windfarm Investigation Area and Proposed Cable Investigation Area.

  • Otter trawl vesselssubject to the minimum mesh-sizerequirement of paragraph (a)(1)(i) of this section may not have ‘‘available forimmediate use’’ any net or any piece of net that does not meet the minimummesh size requirement, or any net, or any piece of net, with mesh that isrigged in a manner that is inconsistent with the minimum mesh sizerequirement.

  • Previous studies of trawl performance have demonstrated that the within-species size selection process occurs primarily in the extension and codend sections of the trawl, while species selection can occur in the net mouth or in the extension and codend, especially if it is influenced by species-specific size differences.Figure II-1.1.1. Otter trawl (From DeAlteris, 1998).

  • Otter trawl and runaround gillnet landings were much lower (Figure 3.17).

  • At an access point to class IV, access will only be granted following: Option A - the presentation of a valid biometric to a reader AND the presentation of a valid unique token using radio frequency identification (RFID)*;or Option B - the presentation of a valid biometric to a reader AND the presentation of a valid unique token to a reader AND the presentation of a correct PIN code of not less than 10,000 differs.* RFID must not rely on recognising the Chip Serial Number (CSN) only.

  • Otter trawl vesselssubject to the minimum mesh-size requirement of paragraph (a)(1)(i) of this section may not have ‘‘available for immediate use’’ any net or any piece of net that does not meet the minimum mesh size requirement, or any net, or any piece of net, with mesh that is rigged in a manner that is inconsistent with the minimum mesh size requirement.

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