Cruise inventory

RRS Discovery D18

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD18
Cruise period1967-07-14 — 1967-08-23
StatusCompleted
Port of departurePlymouth, United Kingdom
Port of returnPlymouth, United Kingdom
PurposeResearch
Objectives1. Trials of four new types of net with comparisons between these and nets previously used.
2. Trials with a bottom longline
3. Trials of two depth telemetering pingers and some new NIO shearpin hydrostatic releases.
4. Trials of the acoustic C.D.B.
5. Trials of the echorancing camera
6. Sampling off Morocco and Fuerteventura to find any marked differences in faunal composition between this and previous years.
7. Bottom longlining to investigate the bottom fish in depths of 800-1500m off Fuerteventura and to evaluate the method for further work.
8. A study of the buoyancy of marine animals.
9. A study of the eyes and photophores of fish and squid.
10. A study of the survival of fish after capture.
Chief scientistMalcolm R Clarke (National Institute of Oceanography)
Cruise reportRRS Discovery D18 cruise report d18.pdf — access key 'C' (0.88 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D18 cruise track — d18track.pdf (0.02 MB) 
Measurements 
Biology and fisheries 
ZooplanktonDescription: Study of the Moroccan Shelf took place during the cruise. No. of hauls not noted.
Demersal fishDescription: A number of fish samples were collected during the cruise for later analysis. No. of sammples not noted.
Demersal fishDescription: Study of the Moroccan Shelf took place during the cruise. No. of hauls not noted.
Gear researchDescription: A number of gear trials took place during this cruise. No. of trials not noted.
Geology and geophysics 
Multi-beam echosoundingDescription: Study of the Moroccan Shelf took place during the cruise. No. of hauls not noted.