Plummet net type II - Hovekamp (1989) and Daly [personal communication to Wiebe and Benfield]
|Within Vocab||SeaVoX Device Catalogue|
|Alternative Labels||Hovekamp-Daly plummet net type II|
|Definition||A downward-fishing, vertical, closing plummet net with a 1-m2 rectangular mouth opening with a net that is attached to two bars that run along a pair of net bar glides along parallel sides. A double messenger system is used to opened the net as it falls to depth and to close it as it reaches the bottom of the haul. The net ~ 180 cm in length has been used with a variety of mesh sizes; 0.163 mm, 0.560 mm, and 1600 mm Nitex. According to Daly [personal communication], the first messenger releases a bridle attached to the opening net bar under tension from a shock cord. The second messenger releases two bridles, one attached to the back of the net frame and the other attached to the closing net bar. The net frame assumes a vertical position, allowing the second net bar to fall, closing the net, and retrieval is begun.|
|Has Current Version||1|
||plankton nets||Mapping: 342934|
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