Nautical Stabilization Mount 500

NSM 500 - Marine

The Nautical Stabilization Mount 500 provides effective gyro stabilization for electro-optical reconnaissance and surveillance sensor systems to improve situational awareness in rough sea conditions.


  • Designed for surveillance sensor stabilization

    on medium to large maritime vessels
  • Medium-sized Marine Gyro Mount

    between smaller RSM 50 and larger OSM 5000
  • Ethernet interface

    for integration in ship’s infrastructure

Reliable Gyro Stabilization for surveillance sensors in all weather and water conditions

The NSM 500 was primarily designed for the stabilization of eletrco-optical reconnaissance and surveillance sensor systems on medium (starting from 1.0 kt onwards) to large maritime vessels. Un-stabilized systems follow the movement of the water caused by the swell which adversely affects the detection and threat-tracking capabilities of the sensor. The two-axis gimbal ensures a stabilized field of view and high-resolution images by compensating the roll and pitch movements of the vessel. This allows EO/IR systems to scan their environment without interference even in extreme sea conditions, in order to best detect, track and classify air and surface threats. The NSM 500 is the perfect gimbal for IRST (infra-red search and track) and other surveillance systems to ensure 360° protection for surface vessels of naval forces.

Highest stabilization range for the best gyro gimbal performance on the market

The NSM 500 is IP 67 compliant and made to perform in very rough sea conditions, up to sea state 6 and beyond. To achieve this performance, the NSM 500 features a peak torque of 250 Nm to withstand even 1.5 G lateral acceleration*. Choosing an NSM 500 means not only opting for an extremely powerful mount, but also one with a uniquely large stabilization range. The NSM 500 compensates for movements in roll and pitch up to ≤±20°. Even installation at high altitudes, such as on 30-meter-high masts, does not affect its performance. For this application SOMAG provides a power cable with a length up to 30 m.

*The possible payload to be stabilized is related to the center of gravity of the payload as well as the lateral accelerations the Gyro Mount and payload have to withstand.

Feed more in, get more out

The NSM 500 is designed for 24/7 operation and offers unsurpassed stabilization accuracy of ≤0.3° rms. The NSM 500 is equipped with an Ethernet port to allow integration of the Gyro Mount into the ship’s infrastructure. 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.


Angular Stabilization RangesPitch at 0° Roll:
Roll at 0° Pitch:
Yaw (Drift):
≤± 20.0°
≤± 20.0°
no drift correction
Residual Deviation1 ≤0.3° rms
Payload2100 kg | 70 kg | 55 kg
220.5 lbs | 154.3 lbs | 121.3 lbs
Continuous Torque125 Nm
Dynamic Peak Torque3250 Nm
Mass33 kg | 72.5 lbs
290 mm | 11.4 in
Ø486 mm | Ø19.1 in
IP ClassIP 67
Operating Temperature-32 °C … + 55 °C | -25.6 °F…+131 °F
Storage Temperature-55 °C … + 85 °C | -67 °F…+185 °F
Communication InterfacesEthernet | RS422 | RS232
Operational Voltage24 VDC (24…30 VDC)
Average Power Consumption4 at Operational Voltage70 W
Peak Power Consumption4 at Operational Voltage450 W
Applied StandardsIACS E10, DNV GL, 2006/42/EC Machinery
Preliminary data, subject to change

1 Vehicle motion ≤± 18° / 15°/s / 40°/s2 – small periodical lateral accelerations (≤ 0.5 g) acceptable, constant lateral accelerations for more than 1 minute reduce the performance of the Mount (can be compensated by external GPS input)
2 Possible payload weight depends on lateral acceleration and CoG of payload | shown data is based on 0.9 g lateral acceleration and a CoG payload offset to the Mount surface of: 250 mm (9.8 in) | 400 mm (15.7 in) | 500 mm (19.7 in)
3 Maximum duration 90 s at 55 °C surrounding temperature | longer if temperature inside the unit is < 55 °C
4 Horizontal payload CoG offsets are not considered; without wind force and other possible external forces


Sharp images and a stabilized field of view despite high waves and rough weather conditions? The solution is Gyro Stabilization Mounts, developed especially for this purpose. Roll and pitch movements are reliably compensated to keep the sensor system perfectly balanced. Would you like to see in which cases SOMAG Marine Mounts are beneficial? We have compiled a number of examples for you that show the variety of application scenarios for our devices.

Discover All Marine Applications


Performance Test


Discover all Gyro Stabilization Mounts with their specifications at a glance in our new product catalog. Below you will also find Mount-specific documentation. Do you need other documents? Then do not hesitate to contact us. We will gladly send you manuals on request.

SOMAG Product Brochure

NSM 500 Marine Data Sheet

Mount Control App and Software Features

Mount Control App
For all Gyro Stabilization Mounts, SOMAG provides a self-developed Mount Control App with numerous features. It is your all-in-one tool for managing your Mount. The app is part of the standard scope of delivery of each device and is delivered on a USB stick together with the Mount.

Software Features
SOMAG offers optional Software Features which allow you to customize your Mount individually to your mission requirements. Feature management and settings can conveniently be made in the SOMAG Mount Control App. Get the most out of your stabilization platform and learn more about the optional Software Features.

SOMAG Mount Control App

Software Features

Related Products

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