Cruise inventory

FRV Scotia 1297S

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Scotia (749S)
Cruise identifier1297S
Cruise period1997-09-22 — 1997-10-13
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
ObjectivesDeep water trawl survey; collection of Nephrops samples
1) To carry out detailed engineering performance measurements on above gear at depth
2) To investigate selectivity of current regulation cod-end mesh size (100 mm) on deep water species
3) To obtain video film of the behaviour of these species within the trawl cod-end
4) To record water temperature at depth during fishing hauls and to relate catch size/species
5) To carry out three hauls for Nephrops samples in Burra Haaf on passage

A crew member was landed by boat in Scalloway on the 23/09/1997. Bad weather stopped work on the 28/09/1997 and the vessel dodged until the 30/09/1997 when fishing was resumed. A break was made in Stornoway on the 02/10/1997 to receive replacement warps, and a ''Scotia'' was required to put into Ullapool for repairs. ''Scotia'' returned to Stornoway to pick up a replacement part.
Chief scientistR Derek Galbraith (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Scotia 1297S cruise report sc12_97.pdf — access key 'C' (0.87 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificNW Scottish waters, N of Shetland Isles, Burra Haaf, Wyville-Thompson ridge, WNW of Sulisker, Vidal Bank SW of Barra Head, St Kilda area.
Measurements 
Physical oceanography 
Subsurface temperature and salinity measurementsQuantity: number of hauls = 30
Description: Deep water: water temperature only at fishing depth measured
Biology and fisheries 
CrustaceansQuantity: number of hauls = 2
Description: Nephrops samples
Gear researchQuantity: number of hauls = 13
Description: Instrumented. (2 partially instrumented) carried out at depths ranging from 675 to 875 metres using warps lengths from 1200 to 1800 metres
Gear researchQuantity: number of hauls = 27
Description: 4 with a 40 mm mesh polyethene cover supported by a 3 metre diameter hoop. 23 with an unsupported 20 mm mesh polyamide cover
Gear researchQuantity: activity duration in hours = 39
Description: Recorded of the deep sea cod-end under various conditions of visibility
Geology and geophysics 
Bottom photographyQuantity: activity duration in hours = 39
Description: Recorded of the deep sea cod-end under various conditions of visibility