Cruise inventory

Mary 7/87

Cruise summary report

Cruise Info. 
Ship nameMary
Cruise identifier7/87
Cruise period1986-07-27 — 1986-07-29
StatusCompleted
Port of departurePwllheli, United Kingdom
Port of returnPwllheli, United Kingdom
PurposeResearch
ObjectivesCruises with Arctic Ranger, Harmil, Mary and Rose.

1. To carry out three inshore beam trawl surveys of parts of the Irish Sea and West Wales coasts.
2. To sample juvenile fish and identify sole nursery grounds.

Survey 1: Beam trawl survey of Tremadoc Bay. 27th-29th July.
Survey 2: repeat of 1, 24th-25th September.
Survey 3: beam trawl stations completed, 28th-29th October.
Chief scientistStuart Ian Rogers (Ministry of Agriculture, Fisheries and Food Conwy Laboratory)
Cruise reportMary 7/87 cruise report commercial_vessels_jul87.pdf — access key 'C' (0.06 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificTremadoc Bay
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of stations = 146
Description: (in total for all 4 ships) recorded at each station during survey 1, repeated in survey 2 and 3
Biology and fisheries 
Demersal fishQuantity: number of stations = 146
Description: (in total for all 4 ships) 2m beam trawl for survey 1, repeated in survey 2 and 3; all flatfish were identified, measured and counted, other species were identified and counted
Demersal fishQuantity: number of specimens = 30
Description: (in total for all 4 ships) 1-group soles returned live to the laboratory for tag-retention trials.
Other biological/fisheries measurementDescription: 0-group sole and solenettes were preserved for gut content analysis
Other biological/fisheries measurementDescription: 0-group soles collected for electrophoretic studies and frozen