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Turbo Jet Drive
Turbo Jet Drive: an electric jet outboard built for inshore work — not a bolted-on accessory
If your fleet already runs a propeller guard — rescue, dive support, surf lifesaving, harbour and inshore work — you know the trade-off: the cage protects, but it costs you thrust and top end. The EClass Turbo Jet Drive is a different answer. No exposed blade at all, engineered as part of the electric drivetrain rather than clamped on afterward — with nowhere near the performance penalty of a caged prop or a generic petrol jet-drive accessory. Instant torque and precise electric control also make it noticeably quicker and smoother to handle than a petrol jet drive, not just safer.
The real comparison
Bare prop, guarded prop, bolt-on jet accessory — or a jet drive built in from the start
Every inshore operator ends up weighing the same four options. Here’s how they actually compare, not just on paper.
| Bare propeller | Propeller guard | Petrol jet-drive accessory | EClass Turbo Jet Drive | |
|---|---|---|---|---|
| Risk to people in the water | Exposed spinning blade — the real strike risk a guard or jet is trying to solve | Blade still spins inside the cage — reduces but doesn’t remove the risk, and the cage itself can strike | No exposed blade, but build quality on generic bolt-ons varies a lot | No blade in the water at all. The impeller sits behind an intake grate, engineered as part of the drivetrain |
| Noise | Normal petrol outboard noise — engine and exhaust note | Same engine and exhaust noise as a bare prop — a guard does nothing for noise | Louder than a normal outboard. The exhaust exits through the drive itself, right at the waterline next to the pump — it’s the reason petrol jet PWCs and jet boats have a reputation for being loud | No exhaust note at all. Electric motor, no exhaust to route through the drive — the pump and the water are the only things you hear |
| Performance vs a bare prop | Baseline — full efficiency | Real loss — a cage disrupts prop flow and cuts thrust and top speed | Often a bigger loss — generic units are rarely matched to the motor’s power band | Some loss — inherent to any jet pump — but matched to the motor, so it’s nowhere near what a guard or a generic bolt-on costs you |
| Shallow water & beach launching | Limited by the lower unit’s draft | Same limit, plus the cage can ground first | Shallow-draft, but reliability varies unit to unit | Shallow-draft — no lower unit hanging below the hull |
| Weed, rope & debris | Fouls easily on weed and line | Cage catches weed and debris — needs regular clearing | Depends on intake design and grate spacing | Grate keeps out rope and most weed. Not designed for gravel-bed shallows |
| Fit & integration | Standard fit | Aftermarket cage — often needs adjustment per prop and re-fitting after a strike | Aftermarket unit bolted to an existing petrol leg | Built on the same electric outboard platform — same battery, charger and Bluetooth monitoring as the rest of the range |
Read that performance row carefully. A jet drive is never going to out-thrust a bare prop — that’s physics, not a sales pitch. But the honest comparison isn’t jet vs bare prop, it’s jet vs the guard or bolt-on you’re already carrying because you need the safety margin. Against those, the gap closes a long way.
Why petrol jet drives get a bad name for noise. On a petrol JetSki or jet-drive accessory, the exhaust doesn’t exit through a normal outboard leg — it’s routed out through the drive itself, right next to the pump and the water intake. That’s what gives them their distinctive, carrying drone, and it’s a real problem for a rescue or dive boat trying to approach quietly. An electric jet drive has no exhaust at all, so that noise source simply isn’t there — what’s left is pump and water noise, nothing else.
The electric advantage
Quicker, smoother and quieter than the petrol jet drive it replaces
This is a different comparison to the efficiency row above. That row was jet vs bare prop — physics, unavoidable for any jet pump. This is electric jet vs petrol jet, and here electric doesn’t just close the gap, it’s the better drive.
“The electric turbo jet delivers immediate torque directly to the jet pump, producing faster throttle response, smoother acceleration and precise low-speed control. With no combustion, exhaust or engine vibration, operation is substantially quieter, leaving mainly the sound of water moving through the jet.”
Why electric can perform better
Mainly because the electric motor suits the operating characteristics of the jet pump far better than an internal-combustion engine does.
Instant torque
An electric motor produces strong torque from zero rpm. It can accelerate the impeller immediately, so thrust builds without waiting for an engine to reach its power band.
Precise impeller-speed control
The controller can hold the motor at the rpm where the jet pump works most effectively. An ICE engine has a narrower efficient range and relies on throttle position, gearing and engine rpm all lining up.
Faster response
Electric power changes almost instantly — quicker acceleration, better low-speed control and more immediate response when manoeuvring alongside a person or a jetty.
No idling losses
A petrol jet drive has to keep running even when little or no thrust is needed. An electric system only draws meaningful power when the impeller is actually being driven.
Gearing matched to the job
The impeller is driven through the casing’s own gearing — sized to that casing and matched to the motor’s kW — not through an extra belt, clutch or generic coupling the way a bolt-on petrol accessory usually is.
More consistent power delivery
Electric torque is smooth and continuous rather than arriving in combustion pulses, which helps the impeller maintain stable water flow and reduces surging.
The important qualification. Electric power doesn’t automatically make the jet pump itself more hydrodynamically efficient — that’s still down to the impeller, nozzle and intake design, and how well cavitation is managed. What electric improves is the motor-to-pump matching, control and torque delivery. That’s a real, meaningful gain in feel and response — it’s just a different thing to the efficiency row above, and we won’t blur the two.
Why it’s much quieter
What’s simply not there anymore
- No combustion explosions
- No exhaust noise
- No air-intake roar
- No engine valve or piston noise
- Much less vibration
- Fewer moving parts overall
Where the sound actually comes from now
Electric motors produce smooth rotational force rather than the repeated power pulses of an ICE engine, so far less vibration transmits into the hull — often where much of the perceived noise comes from on a petrol boat. What’s left is mainly the impeller, water flow, bearings and cavitation. At higher speeds, water noise may become the dominant sound — but the electric system stays quieter overall, with far less low-frequency vibration than an equivalent petrol or diesel jet drive.
Who this is for
Built for fleets that already put safety before top speed
Marine rescue & emergency services
- Where every approach might mean crew or a casualty in the water alongside the hull
- No exposed blade removes the single biggest source of on-water injury risk during a rescue approach or a person-overboard drill
- No exhaust noise at the drive means crew can hear a casualty — and be heard by them — on the final approach
- Shallow-draft for beach launches and skinny water close to the shoreline
Dive charter & dive-support tenders
- Working directly over divers on descent, ascent and safety stops
- A jet drive means the boat can sit close overhead without a spinning blade underneath it
- No exhaust drone through the drive — unlike a petrol JetSki or jet-drive accessory, there’s no engine note carrying down through the water column to divers below
Surf lifesaving & aquatic clubs
- Patrol and support boats operating in the same water as swimmers, paddlers and nippers
- Already running guards on existing IRBs and support craft — a jet drive is the next step, not a compromise
- A safety case that’s easy to put in front of a committee weighing gear against budget
Also worth a look for: harbour and port authority tenders, tour and charter operators working close to swimmers, sailing, rowing and triathlon safety boats, aquaculture and river operators — anywhere a boat regularly works close to people or gear in the water.
On the water
Show it doing the job, not just sitting on a bench
The honest version
Yes, there’s a hydrodynamic trade-off. Here’s where it actually sits.
We’d rather say this plainly than have you find out on the water. A jet pump loses some efficiency to a bare propeller — that’s true of every jet drive ever built, electric or petrol, and going electric doesn’t change the physics of the impeller and nozzle. What going electric does change is how the drive feels to run — see the section above. This part is about raw thrust and efficiency; the other was about response, control and noise. Don’t mix the two up when you’re weighing options.
Best performance
Bare propeller
Full efficiency, full exposed-blade risk. The option you’re moving away from.
Where EClass sits
Turbo Jet Drive
Some loss to the bare prop, matched to the motor — clearly ahead of a guard or a generic bolt-on unit on power delivered to the water.
Most protection, most cost
Prop + guard / petrol jet accessory
Real, measurable performance loss on top of gear that’s still aftermarket and not matched to the drivetrain.
Exact figures — thrust, top speed, efficiency loss — depend on the hull, the HP class and the impeller sizing. We’ll confirm those against your boat before you order rather than quote a generic number that doesn’t hold up on your hull.
Common questions
Turbo Jet Drive — frequently asked
Is a jet drive slower than a propeller?
A jet pump loses some efficiency to a bare propeller — that’s true of any jet drive, electric or petrol. But the Turbo Jet Drive is matched to the motor’s kW through the casing’s own gearing, so the gap to a bare prop is far smaller than what you lose to a propeller guard or a generic petrol jet-drive accessory.
Is it quieter than a petrol JetSki or jet drive?
Yes. Petrol jet drives route their exhaust out through the drive itself, next to the pump, which gives them a distinctive, carrying drone. An electric jet drive has no combustion and no exhaust, so that noise source isn’t there at all — what’s left is mainly pump, water flow and bearing noise.
Can it replace a propeller guard on an existing fleet boat?
It’s built to suit that exact use case — inshore rescue, dive-support and club fleets that currently run a caged propeller for safety. Removing the exposed blade entirely, rather than caging it, is the point. Tell us the fleet, the hulls and the HP and we’ll confirm fit.
Does it use a separate gearbox like an aftermarket petrol jet accessory?
No. It drives the impeller through the casing’s own gearing, sized to that casing and matched to the motor’s kW, rather than an extra belt, clutch or generic coupling the way a bolt-on petrol accessory usually works.
Already running a guard? Talk to us about a jet drive.
Tell us the fleet, the hulls and the HP you’re working with and we’ll confirm whether a Turbo Jet Drive suits — or whether a standard EClass outboard is the better fit.
Not ready to talk yet?
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