RV Ernest Holt 1/68

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Ernest Holt (74EH)
Cruise identifier1/68
Cruise period1968-01-12 — 1968-02-01
Port of departureGrimsby, United Kingdom
Port of returnGrimsby, United Kingdom
ObjectivesA Horse Mackerel
1. Echo survey in western English Channel; trawling.
2. Routine sampling of length, otoliths, maturity, etc,
3. Collect gonads for histological studies.
4. Tagging.
B Sprat and Herring
5. Echo survey of Bristol Channel and Celtic Sea with trace identification
if possible.
6. Tin Tow Net (TTN) survey in same area as (5) for sprat eggs and
herring larvae; surface salinity and temperature.
7. Bottom temperature and salinity off Dunmore herring spawning ground.
8. Drag tests in connection with an experimental plankton collector (UEA).
Chief scientistC Timothy Macer (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Ernest Holt 1/68 cruise report ernest_holt01_68.pdf (0.20 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
Bristol Channel
Physical oceanography 
Surface measurements underway (T,S)Description: T only
Water bottle stationsQuantity: number of stations = 48
Description: T surface 4 S surface
Routine standard measurements