RV Ernest Holt 9/67
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Ernest Holt (74EH) |
| Cruise identifier | 9/67 |
| Cruise period | 1967-11-06 — 1967-12-07 |
| Status | Completed |
| Port of departure | Grimsby, United Kingdom |
| Port of return | Grimsby, United Kingdom |
| Purpose | Research |
| Objectives | By comparative fishing with RV EXPLORER:
1. to compare the catches of the most recent form of the Saro trawl with those of a Granton trawl when both are rigged with 60 fm bridles; 2. to investigate further an apparent gear/ship interaction which has complicated previous comparative fishing results. |
| Chief scientist | A R Margetts (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Cruise report |  (0.21 MB) |
| Ocean/sea areas | |
| General | North Sea Norwegian Sea |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: number of stations = 2 Description: surface water samples |
| Chemical oceanography | |
| Oxygen | Quantity: number of stations = 2 Description: surface water samples |
| Phosphate | Quantity: number of stations = 2 Description: surface water samples |
| Nitrate | Quantity: number of stations = 2 Description: surface water samples |
| Silicate | Quantity: number of stations = 2 Description: surface water samples |
| Biology and fisheries | |
| Biochemical measurements (eg lipids, amino acids) | Description: routine otolith samples of cod, haddock and coalfish |
| Gear research | Quantity: number of hauls = 36 Description: Saro vs Granton trawl comparison |
