RV Clione CLI4/73
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Clione (74CN) |
| Cruise identifier | CLI4/73 |
| Cruise period | 1973-02-19 — 1973-03-01 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Research |
| Objectives | 1. To observe the movement of pelagic fish shoals in relation to the tide by:-
(a) anchoring the ship and using the sector scanning sonar to record shoal movements whilst using DRCMs to measure the tidal currents; (b) launching a parachute drogue in the vicinity of a suitable shoal, tracking the drogue by radar and the shoal by conventional sonar. 2. To investigate the structure of pelagic fish shoals using the ARL scanner in combination with a towed underwater camera. 3. To use a towed underwater camera and then a midwater trawl with a camera fitted to the headline to assess the use of the former as an aid to trace identification. 4. To carry out an echo/fishing/plankton survey of the area to the south and west of Plymouth and Mounts Bay. |
| Chief scientist | Peter R Winslade (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Cruise report |  (0.21 MB) |
| Ocean/sea areas | |
| General | English Channel |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: number of stations = 18 Description: S only |
| Water bottle stations | Quantity: number of stations = 18 Description: 6 bottom |
| Current meters | Quantity: number of deployments = 2 Description: direct reading |
| Surface drifters/drifting buoys | Description: drogues |
| Biology and fisheries | |
| Phytoplankton | Quantity: number of hauls = 17 Description: 20''TTN,14''nose cone and Compi net |
| Zooplankton | Quantity: number of hauls = 17 Description: 20''TTN,14''nose cone and Compi net |
| Eggs and larvae | Quantity: number of hauls = 17 |
| Pelagic fish | Quantity: number of hauls = 18 Description: 20''TTN,14''nose cone and Compi net |
| Demersal fish | Quantity: number of hauls = 18 Description: 20''TTN,14''nose cone and Compi net |
| Meteorology | |
| Occasional standard measurements | |
| Other meteorological measurements | Description: sea and swell |
| Geology and geophysics | |
| Bottom photography | Quantity: number of deployments = 10 Description: underwater camera(towed) |
| Long/short range side scan sonar | Quantity: number of deployments = 2 Description: sector scanner |
