High-performance heading, pitch and roll for towed arrays

Digital Magnetic Compass (DMC)

The SeaTRAX with PNI’s high sensitivity magnetometers and accelerometers is a COTS high- performance heading sensor for seismic streamers and towed arrays.


PNI’s SeaTRAX provides reliable heading, pitch and roll in a single module for easy integration into any streamer and towed array system.


​ITAR-free and made in the U.S.A.


Advanced hard and soft-iron calibration algorithms compensate for any magnetic distortions inherent in the host system removing the need for Helmholtz cages and design complexities of building non-magnetic systems.

Technical Specifications

Heading Accuracy
(full range calibration)
0.3° rms
Tilt Accuracy0.2° rms 
Supply Voltage3.8 - 9V
Average Current Draw
(max sample rate)
Sleep Mode Current Draw0.3 mA
Maximum Sample Rate Hz50 Hz
Communication InterfaceRS232 UART​
DimensionsStandard Part Number 13457: 70 x 11.8 x 10.3
Option Part Number 13118: 70 x 11.8 x 9.8
Weight4.3 gm
Operating Temperature-40° to +85° C

Download Documentation

Try our products for yourself

Order one of our Evaluation Kits and try out our products and amazing technology for yourself.

Other PNI products you might be interested in:

TargetPoint 3 ⇒

Low-SWaPC Targeting Compass for target locating

Prime Pro ⇒

Digital Magnetic Compass

Headway ⇒

Calibration-free Low SWaP-C AHRS Targeting Module

Ask our experts

Get direct advice from our engineers in less than 24 hours. We are available Monday through Friday, 9:00 am to 4:00 pm, Pacific Time.


(707) 566-2260




2331 Circadian Way
Santa Rosa, CA 95407