Crystal River 1501H
Cruise summary report
|Ship name||Crystal River|
|Cruise period||2001-05-11 — 2001-05-25|
|Port of departure||Peterhead, United Kingdom|
|Port of return||Peterhead, United Kingdom|
|Objectives||To demonstrate the effect of proposed Scottish emergency technical conservation measures upon the landed and discarded catch from a commercial pair seine team. This required the systematic comparison of the catches obtained by both of the following codend/extension assemblies in combination with the vessels' own demersal pair seine gear:
Case A - Condend/extension assembly as defined by current legislation:
- Codend: 100mm diamond mesh, 5mm double 'compact' twine, 100 open meshes round, 100 meshes long.
- Square mesh panel: 90mm square mesh ultracross panel, 3m long, postioned between 9m and 12m from the codline.
- Extension: 500 meshes long, consisting of 100mm diamond mesh (100 open meshes round) in the following configuration (from the forward end): 200 meshes 4mm compact single twine and 300 meshes 5mm compact single twine.
- Lifting bag/cover: 265mm mesh lifting cover made of 6mm double compact twine.
Case B - Codend/extension assembly as defined by proposed emergency legislation.
- Codend: as case A
- Square-mesh panel: as case A but positioned between 6m and 9m from the codline.
- Extension: 200 meshes long, consitsting of 100mm diamond mesh, 100 open meshes round, with 5mm compact single twine.
- Lifting bag/cover: non fitted.
|Chief scientist||Mike Breen (Fisheries Research Services Aberdeen Marine Laboratory)|
|Cruise report||(0.22 MB)|
|Biology and fisheries|
|Pelagic fish||Quantity: number of hauls = 40|
Description: haddock and whiting
|Demersal fish||Quantity: number of hauls = 40|
|Gear research||Quantity: number of hauls = 40|