SURVEYShopSubsea Data LoggersK.U.M. Umwelt- und Meerestechnik Kiel GmbH NAMMU

K.U.M. Umwelt- und Meerestechnik Kiel GmbH NAMMU

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NAMMU, The Next Generation LOBSTER, is a Broadband OBS-System in a new design with many unique features.
In the robust and shock resistant syntactic foam shell are integrated a titanium pressure tube of 210mm diameter with broadband seismometer “Trillium Compact 120 sec”, data logger “6D6” and battery pack, as well as titanium releaser KUMQuat, hydrophone and head buoy. Flasher, radio beacon and flag for localization are mounted outside.

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SKU: K.U.M. Umwelt- und Meerestechnik Kiel GmbH NAMMU Category:


This configuration allows recording of one year. For 3-year recording additional batteries are added with a power-backpack for the OBS. Hence the OBS can also be deployed in extremely remote areas with access every couple of years only.

The utmost small size of half of a pallet simplifies the handling and enables to stack three of them in two rows on one pallet.

Anchor and float are asymmetrically designed: NAMMU descends to the seafloor and stays there for data recording in horizontal position but ascends to the water surface in vertical position.

Thanks to the new Data Logger “6D6 a couple of unique features are possible – in short:
· modular system with multiple channels: starting with 4 seismic channels one can freely add additional channels for different purposes
· a GPS-unit and also AIS can be incorporated
· a CSAC (Chip Scale Atomic Clock) is available
· it is possible to swap the storage device from outside the housing while recording

Technical Data

Size: half a pallet: 800mm x 600mm x 600mm
Weight: 155kg without anchor, 205kg with anchor, stackable
Operation depth: 6000m
Frame: titanium, flexible buoyancy from syntactic foam
Power supply: 13,7 month recording: 80 Lithium cells
36,0 month recording: 270 Lithium cells
Data Logger: Seismic Data Logger „6D6
Releaser: K/MT 562 KUMQuat, titanium
Hydrophone: HTI-04-PCA/ULF
Seismometer: Broadband Seismometer
Positioning: Nanometrics „Trillium Compact 120“, or Geophone
radio beacon, flasher, signal flag AIS as an option
Anchor: steel anchor

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Additional information

Area of Application

Oceanography, Environmental Monitoring

Power supply (internal/external with specs)

13, 7 month recording, 80 Lithium cells 36, 0 month recording, 270 Lithium cells

Weight in air [kg]


Width [cm]


Length [cm]


Housing material



K.U.M, Umwelt- und Meerestechnik Kiel GmbH


K.U.M, Umwelt- und Meerestechnik Kiel GmbH

Wischhofstr, 1–3

24148 Kiel