Cruise inventory

Cluaran II

Cruise summary report

Cruise Info. 
Ship nameCluaran II
Cruise period1988-08-22 — 1988-09-16
StatusCompleted
Port of departurePort Ellen, United Kingdom
Port of returnPort Ellen, United Kingdom
PurposeResearch
Objectives1. To compare the catch rtes of scallops using traditional (4') dredges with the catch rates obtained using more recent designs (2' and 2'6"). The information to be used in calibrating catch per unit effort information provided by fishermen.
2. To obtain information on scallop population structure on various grounds around Islay.
3. To observe, by the use of diverse and underwater television, the action and efficiency of scallop dredges on various types of bottom.
Chief scientistNick Bailey (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportCluaran II  cruise report cluaranii_88.pdf — access key 'C' (0.16 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificIslay, Ardmore Port, Port Ellen, Ardtalla, Lochindaal
Measurements 
Biology and fisheries 
MolluscsQuantity: number of hauls = 5
Description: Off Ardmore Point a further 5 hauls were made. One bag of scallops was retained for analysis.
MolluscsQuantity: number of hauls = 15
Description: Hauls were made off sites Port Ellen and Ardmore Point.
MolluscsQuantity: number of hauls = 24
Description: More hauls were made off of Ardtalla, Port Ellen, Lochindaal and Otter Rock Dredges were also made at the last 3 sites.
MolluscsQuantity: number of hauls = 2
Description: 2 hauls were made off Port Ellen in a lull of bad weather.
MolluscsQuantity: number of dives = 1
Description: Divers had a trial run observing the dredges while in operation.
Gear researchDescription: Gear trials took place off Port Ellen, using 2' and 4' scallop dredges. No. of trials not noted.
Moorings, landers, buoys 
Biology and fisheries 
Molluscs55° 43' 17" N  6° 1' 11" W — Catch of scallops in fished areas. Area: Claggain Bay Depth: 10-14 Bottom type: hard, smooth, boulders No. of hauls: 4 4' mean: 86.5 2' mean: 115.3
Molluscs55° 44' 29" N  6° 1' 59" W — Catch of scallops in fished areas. Area: McArthurs Head Depth: 12-14 Bottom type: Hard, smooth, boulders No. of hauls: 2 4' mean: 44 2' mean: 66
Molluscs55° 36' 0" N  6° 13' 35" W — Catch of scallops in fished areas. Area: South Gander Depth: 10 Bottom type: Soft, smooth gravel No. of hauls: 3 4' mean: 30.5 2' mean: 25.7
Molluscs55° 36' 29" N  6° 12' 53" W — Catch of scallops in fished areas. Area: Gander Depth: 10 Bottom type: Hard, v rough, rocky No. of hauls: 8 2'6" mean: 71.3 2' mean: 126.5
Molluscs55° 41' 11" N  6° 0' 29" W — Catch of scallops in fished areas. Area: Ardmore Point Depth: 20-35 Bottom type: Hard, stoney No. of hauls: a4 4' mean: 76.7 2' mean: 126 No. of hauls: b7 4' mean: 50.4 2' mean: 67.3
Molluscs55° 40' 47" N  6° 22' 12" W — Catch of scallops in fished areas. Area: Lochlindaal Depth: 12-20 Bottom type: Hard, stoney No. of hauls: 6 2'6" mean: 74.4 2' mean: 94.5
Molluscs55° 36' 29" N  6° 12' 53" W — Catch of scallops in fished areas. Area: Gander Depth: 10 Bottom type: Hard, v rough, rocky No. of hauls: 11 4' mean: 151 2' mean: 288
Molluscs56° 1' 59" N  5° 56' 29" W — Catch of scallops in fished areas. Area: West Jura Depth: 10-12 Bottom type: Hard, rough, rocky No. of hauls: 3 4' mean: 43.3 2' mean: 89
Molluscs55° 39' 18" N  6° 1' 30" W — Catch of scallops in fished areas. Area: Ardmore Islands Depth: 15 Bottom type: Hard, rock with peaks No. of hauls: a2 4' mean: 116 2' mean: 271 No. of hauls: b2 4' mean: 121 2' mean: 216
Molluscs55° 33' 47" N  6° 6' 59" W — Catch of scallops in fished areas. Area: Otter Rock Depth: 25-30 Bottom type: Soft, smooth gravel No. of hauls: 4 2'6" mean: 89 2' mean: 90.5