Cruise inventory

Marbella 1/90

Cruise summary report

Cruise Info. 
Ship nameMarbella
Cruise identifier1/90
Cruise period1990-01-24 — 1990-02-06
StatusCompleted
Port of departureIJmuiden, Netherlands
Port of returnIJmuiden, Netherlands
PurposeResearch
Objectives1. To determine the selectivity of square mesh codends and extensions
on midwater trawls for mackerel.
2. To collect biological material for stock assessment purposes.
Chief scientistJohn Casey (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportMarbella 1/90 cruise report marbella01_90.pdf — access key 'C' (0.20 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Celtic Sea
SpecificWestern English Channel, Western Approaches, Celtic Sea.
Measurements 
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 4
Description: 4 hauls were made over 2 days and approx. 50-55 tonnes of mackerel was caught.
Pelagic fishQuantity: number of hauls = 1
Description: There was a 2nd haul 12 miles south of Start Point, 2 tonnes was hauled. A larger catch had been made but due to marginal conditions had to be slipped.
Pelagic fishQuantity: number of flights = 1
Description: A tow was undertaken using the 40mm diamond codend and approx. 30 tonnes of fish was hauled.
Pelagic fishQuantity: number of hauls = 1
Description: 12 miles south of Start Point shoals of mackerel were discovered, they were hauled and 27 tonnes of mackerel were caught.
Pelagic fishQuantity: number of hauls = 3
Description: The experimental codend was shot twice and the standard codend once. Approx. 90 tonnes were hauled aboard.
Pelagic fishQuantity: number of hauls = 1
Description: The standard 3700 Engel trawl with a diamond mesh codend was shot and approx. 23.5 tonnes of scad/mackerel were hauled.
Pelagic fishQuantity: number of hauls = 1
Description: The standard 3700 Engel trawl 60mm square mesh experimental codends and 12 tonnes of scad was hauled.
Pelagic fishQuantity: number of deployments = 2
Description: Two tows were made 12 miles south off South Point and approx. 50 tonnes of mackerel were hauled aboard.
Moorings, landers, buoys 
Biology and fisheries 
Demersal fish50° 0' 0" N  3° 32' 59" W — Mackerel shoals were discovered at this location.