What Is the Fastest Underwater Scooter?

If your first question is “What is the fastest underwater scooter?” here is the straight, no-nonsense answer:

In the global market, the fastest consumer underwater scooters are high-end jet units like the SEABOB F5 S / F5 SR, which can reach around 18–20 km/h in ideal conditions.

Within ASIWO, the fastest underwater scooter is the ASIWO U1, reaching speeds up to about 12 km/h (7.5 mph).

This makes U1 one of the fastest compact underwater scooters available today.

That is the core answer. Now here is the context you need.

Why SEABOB Is the Speed Leader (Global)

Top-end jet scooters like the SEABOB F5 S / F5 SR have:

• Extremely powerful jet-drive propulsion

• High output motors

• Large battery systems

This is why they reach 18–20 km/h, which is currently among the highest speeds you can get from a consumer underwater scooter.

These units are fast, but also heavy, expensive, and aimed at professionals and luxury users.

ASIWO’s Fastest: U1

The ASIWO U1 is built for real-world speed and versatility. It is the fastest ASIWO underwater scooter and a performance leader in its class.

ASIWO U1 Key Numbers

• Max underwater speed: up to 12 km/h (7.5 mph)

• Motor power: approx. 1100 W with strong thrust

• Depth rating: up to 50 m (164 ft)

• Modes: 3 speed levels

• Bonus: Works as a SUP motor on the surface

If you want ASIWO’s fastest underwater performance, U1 is the clear choice.

How Manta 2 and Manta Compare

If you want something slightly calmer or more travel-friendly:

ASIWO Manta 2 Underwater Scooter

• Max speed: about 9 km/h

• Dual motors: 2 × 600 W

• Depth: 40 m

• Runtime: up to around 90 minutes
  A powerful all-rounder for snorkeling and dives.

ASIWO Manta Underwater Scooter

• Max speed: about 5.4 km/h

• Depth: 40 m

• Lightweight and easy to carry
  Perfect for travel and casual ocean outings.

Recommended: ASIWO Underwater Scooter MANTA vs MANTA 2: Which One Should You Choose?

Final Summary

Fastest in the world:

SEABOB F5 S / F5 SR (~18–20 km/h)

Ideal for high-budget, high-performance users.

Fastest at ASIWO:

ASIWO U1 (up to ~12 km/h)

Our top performance underwater scooter.

Best balance for most riders:

ASIWO Manta 2

Best for travel and family use:

ASIWO Manta