Cruise summary report

Cruise Info. 
Ship name (ship code)Tridens (64T2)
Cruise period1991-05-27 — 1991-05-31
Objectives1) To compare performance of 12 m beam trawls rigged for plaice and sole fishing
2) To measure survival of various benthic invertebrates caught by two methods of fishing
3) To identify and measure sizes of animals and survival of fish which pass through sole net within 5 minutes of fishing
4) To examine penetration of gear into seabed by side scan sonar and underwater television
5) To take box core samples of seabed
6) To test benthos sampling dredge
Chief scientistW Blom (Netherlands Institute for Fisheries Research)
Cruise reportTridens  cruise report tridens_may91.pdf (1.04 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificCoastal waters north and west of the Dutch Frisian Islands
Biology and fisheries 
Gear researchDescription: Comparing the catches of two 12m beam trawls rigged for plaice and sole fishing.
Other biological/fisheries measurementDescription: Investigating the effect of beam-trawls on the benthos,
Geology and geophysics 
Core - soft bottomDescription: Box-cores.
Long/short range side scan sonar