Nautical Stabilization Mount - NSM 400

The NSM 400 is the latest innovationin the SOMAG Mount portfolio and a medium-sized device between RSM 400 and OSM 4000.  With a mounting space of Ø409 mm the gyro stabilization platform offers space for antennas, radars and a wide range of sensor systems.

Because Gyro Stabilization makes a difference

The NSM 400 stabilizes in real-time pitch and roll movements of ground and rail vehicles caused by uneven terrain. It also compensates the angular motions of boats, ships, Unmannes Surface Vessels (USVs/ASVs) and buoys caused by waves.

Especially EO/IR systems must be able to detect moving objects from a distance and under rough weather and water conditions. Mounted without stabilization the data acquistion of these units is adversely affected by rotational movements of the vessel. SOMAG AG Jena's NSM 400 actively balances vessel movements which drastically reduces motions of the sensor ensuring a stabilized and sharp field of view for perfect situational awareness.The stabilization thus ensures perfectly aligned images and high-quality data capturing.

External data for best performance

The gimbal works automatically and independently due to its internal gyros. It can also process external ship data (NMEA frames) or IMU data, which improves the residual deviation performance for long term applications. An operation 24/7 is possible.

Robust and powerful unit

The NSM 400 features a hydraulic gimbal system which can provide a peak torque of 350 Nm. The high torque ensures the Mount performance even in harsh environments. Like all SOMAG marine and land devices, the NSM 400 complies with IP 67 standard.

First SOMAG Gyro Stabiliation Mount with Ethernet interface

The NSM 400 is the first SOMAG Mount to offer an Ethernet interface which makes the device network compatible and offers a remote access. The installation in difficult accessible places, such as on masts, cuases no problems. For this kind of applications SOMAG provides power cables with a length of up to 30 meters.

Marine and Land Mount Portfolio

You need a gimbal system for higher payloads? Have a look at our OSM 4000!
You need a small and compact gimbal for payloads up to 25 kg? Then the RSM 400 could be the perfect device!

Important Facts

Compatible with

  • 360° cameras
  • Thermal imaging cameras
  • Infrared cameras
  • Video cameras
  • Hyperspectral cameras
  • Laser scanners
  • Antennas

Field of Application

  • Marine
  • Land

Gyro-stabilized platform for marine and land


  • Ethernet Interface
  • power cable length up to 30 m
  • 350 Nm peak torque
  • IP 67
  • paint job according to customer requirements
  • Input of ship data (NMEA frame) or external IMU data (NMEA frame) possible
  • usable 24/7


Angular stabilization ranges

  • Pitch - at 0° roll: ≤±20.0°
  • Roll - at 0° pitch: ≤±20.0°
  • Yaw (drift): no drift correction

Residual deviation1

  • ≤0.4° rms


  • 62.5 kg / 45 kg / 35 kg
  • 137.8 lb / 99.2 lb / 77.1 lb

Continuous torque

  • 125 Nm

Dynamic peak torque3

  • 350 Nm


  • 33 kg
  • 72.8 lb

Dimensions / Height

  • Height: 290 mm / 11.4 in

Dimensions / Diameter

  • Ø486 mm / Ø19.13 in

Usable mounting space

  • Ø409 mm / Ø16.1 in

IP class

  • IP 67

Operating temperature

  • -30 °C ... +55 °C
  • -22 °F ... +131 °F

Storage temperature

  • -55 °C...+85 °C
  • -67 °F...+185 °F

Communication interfaces

  • Ethernet / RS422 / RS232

Operational voltage

  • 28 VDC

Continuous power consumption4 at operational voltage

  • 175 W

Peak power consumption4 at operational voltage

  • 450 W

Recommended pre-fuse rating

  • 20 A

Applied standards

  • IACS E10, DNV GL, BV, DIN EN IEC 60068, 2006/42/EC Machinery


*Preliminary data, subject to change
1 vehicle motion ≤±20.0° /15°/s / 40°/s2 / small later accelerations (≤ 0.5 g) acceptable

2 possible payload weight depends on lateral acceleration and CoG of payload / shown data is based on 1.5 g lateral acceleration and a CoG payload offset to the Mount surface of: 300 mm / 400 mm / 500 mm

3 maximum duration 90 s at 55 °C surrounding temperature / longer if temperature inside the unit is < 55 °C

4 without wind force and other possible external forces

Software Features

  • End Stop Limits: adjustment of the Mount movement range
  • Status/Analysis: logging and analyzing functions in SOMAG Mount Control App
  • IMU Installation Position on Vehicle Frame: adjustment of horizontal IMU position
  • Top- and Bottom position: Mount moves to highest and lowest vertical position
  • RTP off: disables mechanical initialization end stop routine movement procedure
  • Installation Direction: adjustment of Mount horizontal installation direction
  • Extended Temperature Range: -35° C
  • AUX port: enables communication to 3rd party interface

Get in touch with us for detailed information about our optional software features!

NSM 400 Stabilization Performance Test

Read more about the stabilization performance test here.

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