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Robot model

Otter (and Mariner X)

Maritime Robotics (founded 2005 in Trondheim, Norway by founder and chief executive Vegard Evjen Hovstein) makes the Otter, a small all-electric catamaran…

Track Otter (and Mariner X)
Manufacturer
Maritime Robotics
Form factor
maritime_surface
Maturity
commercial
Lifecycle
active
Deployments
1
Website
maritimerobotics.com ↗

Overview

Maritime Robotics (founded 2005 in Trondheim, Norway by founder and chief executive Vegard Evjen Hovstein) makes the Otter, a small all-electric catamaran survey uncrewed surface vessel for sheltered and coastal waters, and the Mariner X, an offshore long-endurance USV, recorded in the maritime form factor. It raised more than 130 million Norwegian kroner in September 2024 in a round led by the Norwegian state-owned climate investor Nysno alongside Umoe, Holta Invest, and NRP Zero, has commercial customers including OceanX and DEME, and ran an autonomous-swarm demonstration for the US Navy in Trondheim Fjord in April 2026, placing it at commercial maturity as the international new-defense extension of the cohort into Norway, beyond the US Saronic and the UK and Germany Helsing. Its Ukraine deployment is handled with symmetric verification rigor across two threads: a government-confirmed, Denmark-funded transfer of Otter USVs to Ukraine, attested on the record by the head of the Ukrainian Navy's Hydrographic Service, is the stronger thread establishing that Otters are in Ukrainian Navy service, while a separate Maritime Robotics and Teledyne Marine announcement that the Otter is now in use by the Ukrainian Navy is company-reported only with its sole quote from the company's defense vice-president, so the registry records that Otters are in service as government-confirmed but notes the quantity is undisclosed by both company and government and that whether the two threads describe the same hulls is not established. The number of vessels delivered to Ukraine and the value of any transfer are undisclosed everywhere and are not asserted.

Verified vs. claimed

Maturity stage
commercial(Commercially deployed with revenue-generating operations.)
Verified deployments
1 deployment on file
Sources on file
4 sources, view all

Key facts

Weight

62 kg dry (Otter)

Payload

30 kg (Otter); >1t (Mariner X)

Operating speed

4.5 kn (Otter)

Runtime

~20h endurance (Otter); ~25-day endurance (Mariner X)

Drive type

All-electric (Otter); diesel + waterjet (Mariner X)

Specs

Notes

Verified: Maritime Robotics (founded 2005, Trondheim Norway; founder/CEO Vegard Evjen Hovstein) makes the Otter (electric survey USV) + Mariner X (offshore). NOK >130M raise (Sept 2024, led by Norwegian state-owned Nysno + Umoe/Holta/NRP Zero). Commercial customers OceanX + DEME; an Apr 2026 autonomous-swarm demo for the US Navy in Trondheim Fjord. maturity=commercial. International new-defense extension (Norway), beyond US (Saronic) + UK/Germany (Helsing)., Ukraine deployment (verification posture - load-bearing): Two threads. GOVERNMENT-CONFIRMED (stronger): a Denmark-funded transfer of Otter USVs to Ukraine, confirmed on the record by Capt. Roman Goncharenko, head of the Ukrainian Navy Hydrographic Service (via ArmyInform, Nov 2023). COMPANY-REPORTED only: the Maritime Robotics + Teledyne Marine 'now in use by the Ukrainian Navy' announcement (Nov 2023; sole quote is the company's VP Defence). So it is government-confirmed THAT Otters are in Ukrainian Navy service, but the QUANTITY is undisclosed by both company and government, and whether the two threads describe the same hulls is not established., Cap-flag: Number of Otter USVs delivered to Ukraine = undisclosed everywhere (do not assert a count). Total contract value of any Ukraine transfer = not disclosed (donation/assistance, not a published contract). Cap-flag aggregator-quoted 'in service' phrasing to the company source.

Specs

Otter: small all-electric catamaran survey USV (2.0m, 62 kg dry, 30 kg payload, 4.5 kn, ~20h endurance, zero-emission) for sheltered/coastal/shallow waters. Mariner X: offshore long-endurance USV (9m, ~25-day endurance, >1t payload, diesel + waterjet). Founded 2005, Trondheim Norway (founder/CEO Vegard Evjen Hovstein); Remote Operations Center in Trondheim. Hardware-sale model.

Form Factor

maritime (autonomous SURFACE vessels / USVs; commercial survey + defense)

Data & sources

Press releases

1

Web sources

3

4 sources backing this record.View all →

Pricing

No verified price is on record for Otter (and Mariner X). Physical-AI systems are often sold through enterprise contracts or operated as a service rather than at a public list price.

How DEPLOY tracks pricing

Deployments (1)

  • Otter (and Mariner X) at Norwayoperational

    Ørsted, the world's largest offshore wind energy company, operates Maritime Robotics Otter uncrewed surface vessels (USVs) for survey, measurement, and inspection work in Norwegian offshore wind project development…

Otter (and Mariner X) on the deployment map

Where Otter (and Mariner X) is verified operating. Explore the deployment map by place and type.

Recent activity

Every change to this record is dated, sourced, and independently verified where marked.

Full change history →

Manufacturer-attributed media (1)

Manufacturer-supplied media at the model level. Not tied to an independently verified named-site deployment. Verification posture is product-showcase from the maker, distinct from the deployment-verified evidence in the section above.

PRIMARY SOURCE
Courtesy of Maritime Robotics

Maritime Robotics' presentation of its Otter uncrewed surface vessel for seabed mapping and coastal survey.

Safety record

No incidents on record for Otter (and Mariner X).

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Sources (4)

  1. https://www.maritimerobotics.com/otter
  2. https://www.nysnoinvest.no/nysno-investerer-i-det-norske-teknologiselskapet-maritime-robotics
  3. https://armyrecognition.com/news/navy-news/2023/denmark-supplies-otter-unmanned-surface-vehicles-to-ukraine
  4. https://www.maritimt.com/maritime-autonomous-drone-swarm-demonstrated-live-for-the-us-navy-in-trondheim

Common questions

What is Otter (and Mariner X)?
Maritime Robotics (founded 2005 in Trondheim, Norway by founder and chief executive Vegard Evjen Hovstein) makes the Otter, a small all-electric catamaran survey uncrewed surface vessel for sheltered and coastal waters, and the Mariner X, an offshore long-endurance USV, recorded in the maritime form factor. It raised more than 130 million Norwegian kroner in September 2024 in a round led by the Norwegian state-owned climate investor Nysno alongside Umoe, Holta Invest, and NRP Zero, has commercial customers including OceanX and DEME, and ran an autonomous-swarm demonstration for the US Navy in Trondheim Fjord in April 2026, placing it at commercial maturity as the international new-defense extension of the cohort into Norway, beyond the US Saronic and the UK and Germany Helsing. Its Ukraine deployment is handled with symmetric verification rigor across two threads: a government-confirmed, Denmark-funded transfer of Otter USVs to Ukraine, attested on the record by the head of the Ukrainian Navy's Hydrographic Service, is the stronger thread establishing that Otters are in Ukrainian Navy service, while a separate Maritime Robotics and Teledyne Marine announcement that the Otter is now in use by the Ukrainian Navy is company-reported only with its sole quote from the company's defense vice-president, so the registry records that Otters are in service as government-confirmed but notes the quantity is undisclosed by both company and government and that whether the two threads describe the same hulls is not established. The number of vessels delivered to Ukraine and the value of any transfer are undisclosed everywhere and are not asserted.
How much does Otter (and Mariner X) cost?
Otter (and Mariner X)'s price is not publicly disclosed. DEPLOY has no verified price on record for Otter (and Mariner X) from Maritime Robotics. Physical-AI systems like this are often sold through enterprise contracts or operated as a service rather than at a public list price; check the manufacturer for the latest.
Is Otter (and Mariner X) actually deployed in the real world?
Yes. Otter (and Mariner X) is independently verified in real-world operation on the DEPLOY registry, confirmed at named deployment sites with primary sources: not a concept, render, or demo-only.
Who makes Otter (and Mariner X)?
Otter (and Mariner X) is made by Maritime Robotics, based in Canada, founded in 2005.
Where is Otter (and Mariner X) deployed?
1 verified deployment of Otter (and Mariner X) is on the DEPLOY registry, including at Norway.
Methodology: Verified · 4 sources (1 primary) · last reviewed 2026-07-12

Verification posture

Verified

High confidence

Review state

Stable

Last reviewed 2026-07-12

Maturity + lifecycle

Maturity stage: commercial

Lifecycle: active

Architectural position

Cohort: maritime_surface

Sources by quality tier

3
unclassified
Unclassified source
1
primary-company-ir
Company IR disclosure

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for Otter (and Mariner X).

Recent coverage

Otter (and Mariner X) in third-party press

Maritime Robotics raises EUR 28M for autonomous sea drones

Jun 12, 2026

Maritime Robotics raises EUR28 million as autonomous sea drones move into global large-scale adoption

Jun 12, 2026