Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV Corella 4/73

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corella (74CX)
Cruise identifier4/73
Cruise period1973-02-20 — 1973-03-05
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To carry out an inshore survey of the English East Coast for fish eggs
and larvae using a 20" naked High Speed Tow Net.
2. To collect stomachs of all species of fish found on the plaice spawning grounds of the Southern Bight using an Engel 800 midwater trawl with headline transducer.
3. To sample a small grid of plankton stations using a high speed plankton
sampler in the same area as Aim 2.
4. To measure escape of copepod nauplii using paired 200 and 400 meshes per inch nets mounted on a 3O" Sampler.
5. To test a new 30" unenclosed net.
6. To collect live copepods for laboratory use.
7. To sample plaice larvae by means of fast and slow hauls in daylight
and darkness for nutrition studies (Ehrlich).
8. To collect samples of dab and plaice for histological studies.
9. To make a transect to the Dutch Coast using a fluororneter to
measure phytoplankton densities.
10. To collect plaice eggs for hatchery use.
Chief scientistJohn D Riley (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Corella 4/73 cruise report corella04_73.pdf — access key 'C' (0.16 MB) 
Ocean/sea areas 
GeneralNorth Sea
Physical oceanography 
Surface measurements underway (T,S)Description: S only
Water bottle stationsQuantity: number of stations = 51
Description: 3 with S only
Transparency (eg transmissometer)Description: turbidity
Chemical oceanography 
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)
ZooplanktonQuantity: number of stations = 100
Eggs and larvaeQuantity: number of stations = 100
Pelagic bacteria/micro-organismsQuantity: number of stations = 40
Occasional standard measurements
Other meteorological measurementsDescription: sea and swell