Data collection is one of the most essential factors in any subsea operation, if not the most essential. The collection and accurate recording of data must be carried out to a high standard across the lifetime of a project, which can run for months and sometimes years.

Despite this requirement, many traditional data loggers have often struggled in the marine environment due to limited measuring capabilities and high power consumption, which in turn leads to very short operational timelines.

K.U.M. has put over 20 years of experience in marine seismic operations into tackling this issue. The result is the development of the 6D6 Data Logger for use on both K.U.M.’s own OBS systems and third-party subsea devices.

Where other data loggers are limited in channel recording capabilities, the 6D6 has been designed to record up to seven channels simultaneously. It also uses very little power without sacrificing performance, while its precise crystal oscillator allows for data collection to be conducted for an extended period with minimal downtime.

The 6D6 is pre-set with four channels and an optional ‘Plug-on’ mode offers potentially up to seven channels to meet the specific needs of customers.

The innovative modular design of the 6D6 allows for the installation of further AD-boards and/or a CSAC clock. Additionally, the clock is buffered internally to ensure safe synchronization regardless of battery issues.

The basic configuration of the 6D6 features an integrated web interface via an access point within a DIRC unit. If connected to DIRC, WiFi connection is established, and any web browser can then be used to program the 6D6.


Features & Benefits


  • Any subsea data collection systems


  • User-guided, foolproof step-by-step-operation
  • Low power consumption
  • ‘Plug-on’ mode for additional channels
  • Data storage independent
  • Internal buffer battery for clock (to protect synchronization)
  • Compatible with all browsers
  • 10 second buffer against accidental battery disconnection


Technical Data

Channels3 x Seismometer, 1 x Hydrophone
AD modulesGeophone; Seismometer, DPG; Hydrophone, APG, etc.
Additional optionsIntegrated GPS, AIS, upgradable up to 7 channels
Data formatMiniSEED
Data storageStiK or SD card (up to 2TB)
Resolution32 bit @ 250 sps
MemoryUp to 2TB
Ports24 I/O for instrument control
Sample rate50sps - 4000sps
Dynamic range142dB
Power consumption125mW