FRV Clupea 1088C
Cruise summary report
|Ship name (ship code)||FRV Clupea (74CU)|
|Cruise period||1988-10-10 — 1988-10-27|
|Port of departure||Buckie, United Kingdom|
|Port of return||Buckie, United Kingdom|
|Objectives||1. 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 scientist||G I Sangster (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)|
|Cruise report||(0.08 MB)|
|Optics (eg underwater light levels)||Quantity: number of measurements = 24|
Description: Light levels measured before, during and after each haul.
|Biology and fisheries|
|Demersal fish||Quantity: number of hauls = 24|
Description: Each haul of two hours duration.