Cruise inventory

FRV Clupea 7/70

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier7/70
Cruise period1970-06-23 — 1970-07-09
StatusCompleted
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
ObjectivesTo survey the North Sea area from the Scottish coast to 1° E and between 55° 30'N and 57° 30'N, using sonar and the fish echo counter, with associated fish sampling by pelagic trawl. All hauls contained a large number of medusae which comprised the bulk of the catch.
Chief scientistSinclair T Forbes (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 7/70 cruise report cl7_70.pdf — access key 'C' (0.13 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificAberdeen Bay, Scurdy Ness, east of Bell Rock, off St Abb's Head, Burghead Bay
Measurements 
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 13
Description: 1-hour hauls using a midwater trawl with a 1/2 mesh codend. A net sounder was used with most of these to determine the depth of the net. Sprats were common in 2 hauls exclusively composed of 1-group fish. Herring were taken in 6 hauls, sandeels composed of 0-group and A. marinus were taken in all hauls
Demersal fishQuantity: number of hauls = 13
Description: 1-hour hauls using a midwater trawl with a 1/2 mesh codend. A net sounder was used with most of these to determine the depth of the net. Haddock were taken in 9 hauls, saithe occurred in 7 hauls, 0-group T.esmarki in 5 hauls, whiting were rarely caught, and cod were also caught. 2 hauls contained T.minutus and another contained grey gurnards
Moorings, landers, buoys 
Geology and geophysics 
Long/short range side scan sonar57° 16' 59" N  1° 53' 59" W — Aberdeen Bay. Simrad SK3 sonar used in side scan mode and as an echosounder to count fish schools transerve to the ship's track.
Long/short range side scan sonar56° 38' 59" N  2° 15' 0" W — Scurdy Ness. Simrad SK3 sonar used in side scan mode and as an echosounder to count fish schools transerve to the ship's track.
Long/short range side scan sonar57° 0' 0" N  0° 15' 0" E — Additional Bottom traces seen. Simrad SK3 sonar used in side scan mode and as an echosounder to count fish schools transerve to the ship's track.
Long/short range side scan sonar56° 0' 0" N  2° 0' 0" W — St Abb's Head. Simrad SK3 sonar used in side scan mode and as an echosounder to count fish schools transerve to the ship's track.
Long/short range side scan sonar56° 22' 59" N  2° 12' 59" W — Bell Rock. Simrad SK3 sonar used in side scan mode and as an echosounder to count fish schools transerve to the ship's track.