We can undertake either short term current measurements such as with a moving vessel ADCP (MVADCP) system or simple anchored vessel measurements in estuarine waters for example.
The instrument illustrated above is a 'Valeport Model 105'. This industry standard direct reading current meter (DRCM) may be used either from a vessel at anchor or deployed automously in a sub-surface mooring.
Longer term deployments of autonomous seabed/surface-mounted instruments are also often undertaken.
A typical configuration for long term current measurements utilises an ADCP deployed in a custom-made seabed frame.
Alternatively, if only single-point measurements are required, an electromagnetic current meter (EMCM) as depicted below may be deployed either in a seabed frame or in-line mooring.