FRV Clupea 1088C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier1088C
Cruise period1988-10-10 — 1988-10-27
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
Objectives1. To observe, measure and film 2 identical 300 hp Jackson rockhopper trawls (BT158) with 85mm diamond mesh codends, rigged to a two-warp, separately bridled twin trawl rig using diving, RCTV and " Scanmar" techniques.
2. To observe fish reactions around the centre skid area.
3. To complete at least 20 trawling hauls and compare the catches in the two codends. Environmental factors to be measured before, during and after each haul.
4. To assess the merits of the twin trawl for future selectivity experiments.
Chief scientistG I Sangster (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 1088C cruise report cl10_88.pdf (0.08 MB) 
Ocean/sea areas 
GeneralNorth Sea
Specificoff Buckie/Kirkwall
Physical oceanography 
Optics (eg underwater light levels)Quantity: number of measurements = 24
Description: Light levels measured before, during and after each haul.
Biology and fisheries 
Demersal fishQuantity: number of hauls = 24
Description: Each haul of two hours duration.