{"id":1630,"date":"2019-02-24T12:00:00","date_gmt":"2019-02-24T12:00:00","guid":{"rendered":"https:\/\/worldfishing.nfdtesting.uk\/icefish-conference\/2019\/02\/24\/full-trawl-door-control-is-here\/"},"modified":"2026-08-26T23:34:05","modified_gmt":"2026-08-26T22:34:05","slug":"full-trawl-door-control-is-here","status":"publish","type":"post","link":"https:\/\/www.worldfishing.net\/icefish-conference\/news\/fishing-gear\/full-trawl-door-control-is-here\/","title":{"rendered":"Full trawl door control is here"},"content":{"rendered":"

It has been a long process for Atli J\u00f3safatsson to develop the Poseidon doors, overcoming a number of setbacks on the way, and culminating in full-scale trials with the doors on a trip with Greenlandic pelagic vessel Polar Amaroq<\/em> fishing blue whiting at the beginning of the year.<\/p>\n

The Poseidon doors with with a row of wings in the upper and lower section of each door, which can be angled to open or close the gaps between them, with each section controlled independently, providing the capacity to generate downwards or upwards forces to drop or lift the doors as required.<\/p>\n

\u201cEach wing can be controlled independently, so that makes it possible to control the trawl\u2019s position in the water, vertically and horizontally. So closing up the upper wings to reduce the flow through the top section increases the pressure on the lower section, which lifts the door,\u201d Atli J\u00f3safatsson explained<\/p>\n

Communication between the doors and the wheelhouse is via an acoustic link, and developing this was the final piece of the package as the controllable wings had already been shown to function as required in previous trials, including a trials with a smaller pair of Poseidon doors on board groundfish trawler Vestmannaey<\/em> some time ago.<\/p>\n

This time Polar Amaroq<\/em> sailed with a pair of 14m2<\/sup> Poseidon doors for fishing grounds south-east of the Faroes, and such was skipper Geir Zo\u00ebga\u2019s confidence in the pair of Poseidon, that these were the only door on board for this trip.<\/p>\n

\u201cI\u2019m really impressed with what these doors can do. This is the future and these are easily the best steerable trawl door so the market today,\u201d he said at the end of the trip as Polar Amaroq<\/em> docked in the east coast port of Nor\u00f0fj\u00f6r\u00f0ur with a full load of blue whiting after a trip in bad weather and patchy fishing. He added that even though there were a few teething troubles with the prototype Poseidons, he had every intention of keeping the doors on board for the next trip.<\/p>\n

\u201cThese doors offer endless possibilities. We can adjust the wings to reduce or increase the square when towing against or with the current. They can be angled up or down as required, so this offers possibilities for towing both on the bottom and just below the surface,\u201d he said.<\/p>\n

\u201cWe can see the wings altering the flow of water through the doors and making them work exactly as they should do. It makes the doors much easier to manage, especially as we can lift one door to come about and turn faster.\u201d<\/p>\n

A satisfied Atli J\u00f3safatsson commented that it has been a long process since the ideas behind these steerable doors first began to take shape, and this has brought together a number of different technologies.<\/p>\n

\u201cIt\u2019s a huge step in a long development process towards a new generation of trawl doors that can be controlled remotely from the wheelhouse,\u201d he said.<\/p>\n

\u201cThe doors work well and have performed as expected. There have been a few glitches and these still need to be fixed, but there are no major hurdles to overcome,\u201d he said and added that the faith in these doors shown by skipper Geir Zo\u00ebga and fishing companies S\u00edldarvinnslan hf and Polar Pelagic AS have been one of the key factors in the development of these doors, while Rann\u00eds has also played a part in supporting the development.<\/p>\n

\u201cThis is the future. This is what trawl doors are going to be,\u201d Geir Zo\u00ebga commented.<\/p>\n","protected":false},"excerpt":{"rendered":"

The first full-scale trials with a pair of controllable Poseidon doors developed by Icelandic company Polar Trawl Doors has shown that the concept works and that adjustment of doors during a tow is here.<\/p>\n","protected":false},"author":2,"featured_media":1631,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"sponsor":[],"class_list":["post-1630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fishing-gear"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/posts\/1630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/comments?post=1630"}],"version-history":[{"count":1,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/posts\/1630\/revisions"}],"predecessor-version":[{"id":1632,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/posts\/1630\/revisions\/1632"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/media\/1631"}],"wp:attachment":[{"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/media?parent=1630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/categories?post=1630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/tags?post=1630"},{"taxonomy":"sponsor","embeddable":true,"href":"https:\/\/www.worldfishing.net\/icefish-conference\/wp-json\/wp\/v2\/sponsor?post=1630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}