Crystal River 1501H
Cruise summary report
| Cruise Info. | |
| Ship name | Crystal River |
| Cruise identifier | 1501H |
| Cruise period | 2001-05-11 — 2001-05-25 |
| Status | Completed |
| Port of departure | Peterhead, United Kingdom |
| Port of return | Peterhead, United Kingdom |
| Purpose | Fisheries |
| 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 | Michael Breen (Fisheries Research Services Aberdeen Marine Laboratory) |
| Cruise report |  (0.22 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Measurements | |
| Biology and fisheries | |
| Pelagic fish | Quantity: number of hauls = 40 Description: haddock and whiting |
| Demersal fish | Quantity: number of hauls = 40 Description: cod |
| Gear research | Quantity: number of hauls = 40 |
