Marine / Underwater Robot Leaderboard
2 robots · ranked byMARMX
| # | Robot | Status | Autonomy | Conf. | MARMX |
|---|---|---|---|---|---|
| 1 | 🇺🇸 SurveyorSaildrone |
commercial | task-autonomous | medium | 80.3 |
| 2 | 🇺🇸 VoyagerSaildrone |
commercial | task-autonomous | medium | 57.9 |
Best underwater robots in 2026: who leads and why
Surveyor by Saildrone is the highest-scoring underwater robot on the MARMX in 2026, at 80.3 out of 100 — 22.4 points clear of Voyager by Saildrone (57.9).
The leaders share a strength: Surveyor on commercial readiness & deployment (100.0) and Voyager on commercial readiness & deployment (99.0). The MARMX weights mobility & locomotion (30%), autonomy & intelligence (25%) and hardware & engineering (25%) above the rest, so a lead there is worth more than the same lead elsewhere.
Frequently asked questions
What is the best underwater robot in 2026?
On the MARMX, Surveyor by Saildrone scores highest, at 80.3 out of 100. Voyager (57.9) follow. Scores are computed from published specifications and deployments, each checked against at least two independent sources.
How are underwater robots ranked here?
By the Marine Metric (MARMX), a 0–100 composite of autonomy & intelligence (25%), manipulation & dexterity (8%), mobility & locomotion (30%), hardware & engineering (25%) and commercial readiness & deployment (12%), normalised against reference scales specific to underwater robots. The weights are published and the scores are reproducible from public specifications.