Autosub ALR-3

  • Public vehicle
  • Serial Number alr-3
  • Operated by NOC

The Autosub Long Range AUVs (ALRs) are a new type of AUV with a depth rating of 6000m. Although a third the weight of the older Autosub3 and the Autosub6000 AUVs, they are able to travel greater than ten times the distance and can be deployed for over a hundred times the duration.

The key to achieving this performance is efficient propulsion at slow speed (at 0.4 ms−1), and by keeping tight control of the power used by the AUV sensors and control systems. One area in which recent advances in technology has helped make this possible has been in the development of microprocessors for devices such as mobile phones which have ample processing power, but which use very little energy.

Autosub Long Range specification
Vehicle Type Autonomous Underwater Vehicle
Depth rating 6000m
Size 3.62m
Weight 700kg
Mission range 6000km
Deployment Ship or shore
Home National Oceanography Centre, Southampton UK.


In March 2016 the Natural Environment Research Council launched a campaign to find a name for the UK’s next world-class polar research ship. One suggestion in particular captured the nation’s imagination and #BoatyMcBoatface was soon trending on Twitter and being talked about all over the world! The ship was named another popular choice, RRS Sir David Attenborough, but the popularity of ‘Boaty’ could not be ignored, and so the National Oceanography Centre’s Autosub Long Range autonomous vehicles now proudly carry the name.



Mission Deployed Recovered Last Update
Autosub Long-Range ETI HAT 03_17 2017/02/28 00:00:00 UTC (1993 days ago) by Miles Pebody 2017/04/07 00:00:00 UTC (1955 days ago) 2017/04/06 12:54:21 UTC (1956 days ago)
ASSSS-2 Plymouth Trials 2017/05/01 00:00:00 UTC (1931 days ago) 2017/05/05 00:00:00 UTC (1927 days ago) 2017/05/04 12:06:58 UTC (1928 days ago)
ASSSS 2A 2017/09/04 00:00:00 UTC (1805 days ago) by Catherine Harris 2017/09/16 00:00:00 UTC (1793 days ago) 2017/09/14 23:59:09 UTC (1794 days ago)
ETI SAT 2017/07/10 00:00:00 UTC (1861 days ago) by Catherine Harris 2018/06/01 00:00:00 UTC (1535 days ago) 2018/11/23 15:00:34 UTC (1360 days ago)
ALR-3 FAT 2018/12/01 00:00:00 UTC (1352 days ago) None 2018/12/19 09:07:51 UTC (1334 days ago)
ALR-3 ASSSS Loch Ness 2018/05/14 00:00:00 UTC (1553 days ago) None None
DY152 2022/06/26 23:00:00 UTC (48 days ago) 2022/07/23 23:00:00 UTC (21 days ago) 2022/07/22 10:22:57 UTC (23 days ago)
LNCT2-21 2021/07/16 23:00:00 UTC (393 days ago) 2021/08/08 23:00:00 UTC (370 days ago) 2021/07/29 15:07:51 UTC (381 days ago)