Cruise inventory

RRS Discovery D343

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD343
Cruise period2009-09-27 — 2009-10-15
StatusCompleted
Port of departureGovan, United Kingdom
Port of returnGovan, United Kingdom
PurposeTrials
ObjectivesTesting of theAutosub6000 AUV, its systems and safe control to as deep as possible up to 6000 m
Testing of collision avoidance system based on scanned sonar collision avoidance sensor
Testing of: Dual CT, LSS (Light scattering sensor), EH probe and magnetometer and Mulitbeam sonar

Participation of two researchers from University of Birmingham who are developing a fault diagnosis system for Autosub6000
Test of the HYBIS system in as deep water as possible (NOCS, Southampton).
Testing of Acoustic and Satellite Telemetry systems (POL, Liverpool).
To develop and test remote measurement technologies, deep water communication systems and a compact version of the MYRTLE (multi-year return tide level equipment) long term deep water recoverable lander.

The cruise began with initial tests of the Autosub6000 AUV in the Celtic deep, followed by deep tests of the AUV to 5600m on the Iberian Abyssal plain. HYBIS also carried out a successful deep test in this location. The majority of the work for the Autosub6000, HYBIS and the POL telemetry tests were carried out further south over and around the Casablanca seamount. A high percentage of the tests were successful.
Chief scientistStephen D McPhail (National Oceanography Centre, Southampton)
ProjectOceans 2025
Coordinating bodyNatural Environment Research Council
Cruise reportRRS Discovery D343 cruise report d343.pdf — access key 'C' (4.23 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificNorth East Atlantic
Track chartsRRS Discovery D343 cruise track — d343trk.pdf (00 MB) 
Measurements 
Geology and geophysics 
Bottom photographyQuantity: activity duration in hours = 12
Description: Video recordings of the flanks and over the summit area of the Casablanca Seamount centred on N 32 44.4, W 13 15.1. Data recorded for test purposes only.
Multi-beam echosoundingQuantity: survey square kilometres = 20
Description: High (3m) resolution, AUV collected, Multibeam Sonar over the flanks and summit area of the Casablanca Seamount, centred on N 32 44.4, W 13 15.1. Data recorded for test purposes only.