Cruise inventory

FRV Mara 5B/67

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier5B/67
Cruise period1967-05-24 — 1967-06-23
Port of departureFort William, United Kingdom
Port of returnBuckie, United Kingdom
ObjectivesLoch Torridon acoustic experiments

The acoustic equipment was loaded at Fort William. Bottles of compressed air were collected in Kyle before going on to Loch Torridon to check the Admiralty moorings. The ship returned to Kyle harbour at weekends to replenish water and food supplies.

The ''Maid'' was operated by ''Mara's'' crew who were responsible for catching the live fish used in the experiments. Temperature and salinity readings were taken using the NIO T/S bridge. A few samples were taken of plankton organisms which were thought to be causing volume reverberation and interfeering with the acoustic experiments.
Chief scientistColin J Chapman (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 5B/67 cruise report mara5_67.pdf — access key 'C' (0.11 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificLoch Torridon, Kyle
Physical oceanography 
Surface measurements underway (T,S)Description: readings taken using a N.I.O. T/S bridge
Subsurface temperature and salinity measurementsDescription: readings taken using a N.I.O. T/S bridge
Biology and fisheries 
PhytoplanktonDescription: few plankton samples
ZooplanktonDescription: few plankton samples
Gear researchDescription: airgun used to investigate swim bladder resonance
Other biological/fisheries measurementDescription: live fish with intact swim bladders
Geology and geophysics 
Single-beam echosoundingDescription: measurements made on saithe, haddock, whiting and pollack