Balaena 1/88

Cruise summary report

Cruise Info. 
Ship name (ship code)Balaena (74G4)
Cruise identifier1/88
Cruise period1988-10-19 — 1988-10-22
Objectives1. To estimate the abundance of 0 group/juvenile bass in the R. Medway, especailly in the vicinity of Kingsnorth Power Station.
2. To descrive the distribution, movement and length distributions of 0 group/juvenile bass in the area.
3. To estimate the daily mortality rate of 0 group bass (due to entrainment on the cooling-water intake screens) at Kingsnorth Power Station using dye-marked fish.
4. To collect biological samples of bass for growth studies.
Chief scientistDerek Roy Eaton (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportBalaena 1/88 cruise report balaena_oct88.pdf (0.05 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificR. Medway, Kent
Biology and fisheries 
Demersal fishQuantity: number of deployments = 4
Description: Fish traps were deployed at the lagoon at Kingsnorth power station.
Demersal fishQuantity: number of surveys = 1
Description: The Medway river between Grain and the Medway Bridge was surveyed using fine mesh trawls.