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10

Sonardyne has launched the groundbreaking

SPRINT-Nav U, one of the world's smallest hybrid

acoustic-inertial navigators designed specifically

for compact marine robotic platforms.

This technology delivers the proven performance

of Sonardyne's SPRINT-Nav family in a package

measuring just 135 mm tall by 114mm in diameter

and weighing only 600 grams in water.

SPRINT-Nav U represents a significant

advancement for operators of small ROVs, AUVs,

towfish and USVs, who can now access survey-

grade navigation capabilities previously available

only to larger platforms.

The system combines four critical instruments—

AHRS, DVL, INS, and pressure sensor—into a

single unit with one connector and one cable,

dramatically simplifying integration while

optimising size, weight, and power consumption.

"SPRINT-Nav U transforms what's possible for

small robotic platforms. Operators can now

conduct complex inspections

and surveys around offshore

structures, ports, and harbours

with exceptional accuracy and

reliability, without the need for

large-scale vessel

deployments," said Aidan

Thorn, Business Development

Manager – Marine

Robotics, Sonardyne.

Key features and benefits

Ultra-compact design:

Measuring 135 mm x114 mm

and weighing only 0.6 kg in

water (1.98 kg in air), SPRINT-

Nav U fits into spaces

traditionally occupied by just a

DVL

SPRINT-Nav

True north seeking: Maintains accurate

heading even in ferrous environments where MEMS-

based navigation systems struggle

Survey-grade performance: Delivers 0.1%

error for distance travelled during typical surveys,

with heading accuracy of 0.15°

Extended altitude range: 500 kHz DVL

maintains bottom lock at up to 100 m altitude

Rapid deployment: Aligns in just 5 minutes

with DVL bottom lock

Easy operation: Familiar web user interface

shared with SPRINT-Nav Mini, with outputs

compatible with third-party software

GAME-CHANGING CAPABILITIES

SPRINT-Nav U is particularly valuable for offshore

wind operations, where its compact FOG-based IMU

provides continuous, high-accuracy position,

orientation, and velocity data even when operating

in and around steel structures.

This capability enables operators to

conduct thorough inspections of

wind turbine foundations, cables, and

other subsea infrastructure without

the interference issues common to

magnetic-based systems.

"The ability to maintain accurate

navigation in and around ferrous

structures is a game-changer for

operations such as offshore wind

farm monitoring and maintenance.

SPRINT-Nav U ensures operators can

collect consistent, high-quality data

near steel components where other

systems would fail." John Houlder,

Senior Product Manager, Sonardyne.

SPRINT-NAV U

NEWS

SONARDYNE

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