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Electric Safety Boat FAQs

Momentum M10 electric outboard

  1. How powerful is the M10? 10 kW continuous input, described as a 15 hp equivalent. It doesn’t rely on short boost figures, and its instant torque feels closer to 20 hp off the line.
  2. Will it plane a safety boat? Yes. It gets RIBs and safety boats such as the Rigiflex 360 onto the plane almost immediately, which is why the RYA Midlands trial chose it for Phase 2.
  3. How fast will it go? Typically 15 to 17 knots on lighter planing boats with the standard prop, and up to about 15 knots on a Rigiflex 360. Speed depends on hull, load and conditions.
  4. How long does it run? It depends on speed. Around 24 hours at trolling speed, a full day of normal safety-boat duty with idling and short sprints, and roughly 40 minutes flat out in heavy chop with three adults aboard. Customer examples include 15.1 nm in a Bantam 330S with battery to spare, and about 20 miles with charge remaining.
  5. Can it tow dinghies? Yes. The large 34 cm four-blade prop and instant torque give enough thrust to tow several boats, and it has been filmed recovering a stuck Cygnet 20 and towing a line of dinghies.
  6. What does it weigh? The motor is 21 to 24 kg depending on shaft, the transom mount 6 to 7 kg, and the MB-6 battery 37 kg. The whole system is about 65 kg, versus around 50 kg for a 15 hp petrol motor alone plus fuel.
  7. Which shaft lengths are available? Short 390 mm, long 520 mm and extra-long 640 mm.
  8. Tiller or remote steering? Both. The package ships as tiller control. For consoles, add the MT-1 top-mount throttle (£450) or MT-2 side-mount throttle, plus a remote-enabled cable and steering kit. Hydraulic or rotary cable steering both work.
  9. Is there a dual kill cord for RYA training? Yes. The MT-2 remote has a Trainer Mode in which both the instructor’s and trainee’s kill cords must be attached, and removing either stops the motor.
  10. What is eco mode? It limits forward power to 2.5 kW, around 5 to 6 knots on many boats, ideal for shadowing a fleet and stretching range. Press the safety button for full power and reverse.
  11. Does it have reverse? Yes, instant reverse via the safety button, with full torque for precise manoeuvring alongside a capsized boat.
  12. What does the display show? Speed, power, battery level, time remaining and a GPS range estimate, in knots, km/h or mph.
  13. Can I use it in salt water? Yes. It is saltwater compatible with three sacrificial anodes. Rinse with fresh water after use and tilt it up if left on the boat.
  14. What maintenance does it need? No oil, impeller, spark plugs or carburettor. Check the prop and connectors before each use, the anodes and grease every 3 months, screws every 6 months, and a dealer inspection every 12 months.
  15. Why does the tiller pull to port? That’s normal prop torque at high power. Tighten the four Allen bolts on the steering damper evenly to reduce it; choppy-water users run it tighter.
  16. What if I hit weed or rope? The display shows MOTOR BLOCKED. Remove the kill cord, disconnect the battery, tilt up and clear the prop, then check it turns freely by hand.
  17. Is it safe if it gets swamped? The motor and MB-6 battery have been dunk-tested and started without sparks or faults, and the battery is IP67. The system carries no high voltage unless the CANbus handshake between battery and motor is synchronised.
  18. Can I use my own battery? Yes, with the ME-1 external battery adapter (60 to 84 V, 72 V nominal). The battery must sustain 10 kW continuous and 12 kW peak; the display then shows voltage only, not range.
  19. Which boats suit it? Hulls from about 3.1 m, RIBs and workboats up to about 4.2 m and 220 kg, and sailing boats to about 38 ft as an auxiliary. Clubs use it on Rigiflex, 3D Tender, Highfield, Seastrike, Takacat and eGuardian hulls.
  20. Is there a prop for heavy boats? Yes. A high-thrust prop is available for heavier displacement boats, targeting efficiency around 8 knots and curing cavitation.
  21. What warranty does it have? 2 years for private use, 1 year for commercial use. Most club, school and centre fleets are treated as commercial use.
  22. What’s in the package? Motor with standard prop, quick-release transom bracket with remote steering tube, MB-6 battery, charger, two magnetic kill cords and tiller battery cable. It normally arrives on a pallet.
  23. How much does it cost? The complete M10 package is £9,000. [Confirm VAT basis and club/volume pricing.]
  24. Who supports it in the UK? Electric Outboard (Adventure Marine Ltd, Lymington) is the UK sole distributor, holds spares stock and manages warranty claims.
  25. Can we try one first? Yes, through RescueREADY on your own boat and water.

M10 MB-6 battery and chargers

  1. What battery does the M10 use? The Momentum MB-6: 72 V nominal, 90 Ah, about 6.4 kWh, lithium-ion NMC prismatic cells, IP67.
  2. How big and heavy is it? 47 x 23 x 29 cm and 37 kg, sized to fit a standard fuel locker.
  3. Where should it go in a safety boat? Somewhere sheltered, non-slip and secured. On the RYA Midlands Rigiflex it sits in the bow locker for balance, with the cable run through the hull so the deck stays clear for casualty recovery.
  4. How long does it last? More than 1,500 cycles to 80% capacity, which is many seasons of club use.
  5. How do I charge it? From an ordinary 13 A socket. Connect the charger to the battery before switching on at the wall, and charge in a cool, dry place out of direct sun.
  6. How long does charging take? The standard charger (about 1.6 kW, drawing about 7 A) charges from flat in under 5 hours. The fast charger (up to 2.55 kW, input limited to 11 A) goes from empty to full in just over 2.5 hours, or about half a charge in an hour.
  7. Will the charger trip our clubhouse supply? Neither charger should trip a 13 A plug. With several boats, stagger charging or use timers, and we can check your supply.
  8. Can I charge on a harbour power bollard? Yes, the standard charger’s low draw suits most bollards.
  9. Can I use any charger? No. Only original Momentum chargers work, because the charger and battery perform a CANbus security handshake.
  10. Can it overcharge or overheat? The built-in battery management system controls charging, and the charge rate is low for these cells.
  11. What does it cost to charge? At 25p/kWh a full 6.4 kWh charge costs about £1.60, and much less on an overnight or solar tariff.
  12. How should we store it over winter? For more than 3 months, store it fully charged, check every 3 months, top up, never let it fall below 50%, and fit the connector cover. Keep it dry and frost-free.
  13. Can we use it in cold weather? Yes, but if the display shows a battery under-temperature warning, warm the battery before use. Store above freezing.
  14. Can it get wet? It is IP67 and has been dunk-tested, but don’t deliberately immerse it, don’t spray water into connectors and wipe it dry if wet.
  15. What do the battery warnings mean? Over-temperature: stop and let it cool. Cell fault, discharge or charge current exceeded: stop and contact your dealer. Below 20%: the display warns you to return home or reduce speed.
  16. Can I link two batteries for longer range? A power distribution system to link two MB-6 batteries is planned for 2027. Twin-motor set-ups already run one battery each.
  17. Can I use a LiFePO4 or other battery instead? Yes, via the ME-1 adapter, if it supplies 60 to 84 V and can sustain 10 kW. You’ll need its own state-of-charge gauge.
  18. How do I turn it on and off? Hold the power button about 5 seconds to turn it on and 8 to 10 seconds to turn it off.
  19. Can I buy a spare? Yes. A spare MB-6 is the simplest way to cover back-to-back sessions or regatta days.
  20. Can batteries be shipped abroad? Yes. Lithium batteries ship as regulated dangerous goods; we handle the packing and paperwork for worldwide package deliveries.
  21. Is the warranty the same as the motor’s? Yes: 2 years private, 1 year commercial, handled through Electric Outboard.

Momentum U2 electric outboard

  1. What is the U2 for in a club? Small, light rescue and coaching tenders, sailing-school support for slow fleets, auxiliary or get-you-home power on keelboats and Wheelyboats, and committee or mark-laying boats.
  2. How powerful is it? 2.5 kW continuous, about a 5 hp equivalent at full power and about 3 hp in eco mode. It can run at 3 kW with a suitable third-party battery.
  3. How fast will it go? Over 10 knots on a 3 m EZraft Q300 with one person, and it planes light tenders such as the EZraft Q360, Takacat T300LX and Highfield Classic 310.
  4. How long does it run? At about 3 knots, Momentum’s test figures give just over 18 hours on an EZraft Q360, 9.7 hours on a Takacat T300LX and 7.7 hours on a Highfield Classic 310. At 5 knots, it’s 1 to 1.6 hours. 3 knots is the sweet spot.
  5. Is it enough for a safety boat? For displacement-speed duties on sheltered water, yes. For planing rescue cover on open water, choose the M10.
  6. What does it weigh? Motor 9 kg, battery 8 kg, bracket 2 kg, so no single part weighs more than 9 kg, easy for volunteers to carry.
  7. Which shafts are available? Extra-short 345 mm, short 390 mm and long 520 mm.
  8. What battery does it use? A detachable 48 V lithium-ion battery of about 1.45 kWh, IP67, with an integrated trip computer and GPS. It swaps in under 10 seconds.
  9. How long does it take to charge? About 2.5 hours from flat on the included 600 W charger, which most competitors sell as an extra.
  10. What does a charge cost? About 35p for a full charge at 25p/kWh, and less on overnight or solar tariffs.
  11. How do I read the battery gauge? 15 bars: 10 green (roughly 55% of capacity), 3 orange and 2 red. After the last red bar a small reserve gets you home, but don’t rely on it.
  12. Can it get wet? Yes. It has been filmed running fully submerged, and the battery has been dunk-tested in salt water with no sparks. Connectors are gasketed and self-cleaning.
  13. How do I get full power and reverse? It starts in eco mode at partial power. Press the red button at the end of the tiller for full power and for reverse.
  14. Can I lock the throttle? Yes. The throttle tensioner collar on the tiller can lock a steady cruising speed for shadowing a fleet.
  15. How does tilt and kick-up work? Pinless tilt and trim with four positions plus horizontal, and an anti-grounding mode that lets it kick up on impact.
  16. How do I stop the boat turning on its own in chop? Tighten the steering resistance screw with a 6 mm Allen key.
  17. Is there remote steering? Planned for 2027, with MT-1 and MT-2 throttles.
  18. Can I use another battery? Yes, any 48 V battery able to supply at least 2.5 kW continuous; an adapter is due late 2026.
  19. Can it charge from solar or 12 V? A DC (12 V) charger is coming, which will also allow solar charging.
  20. How do I secure it? A padlock through the transom-mount clamps, or a covered cable through motor, battery and bracket to the boat.
  21. What maintenance does it need? None routine: no oil, impeller or pull-cord. Rinse after salt water and check the prop.
  22. What does it cost? £2,700 inc VAT; spare battery £1,200. Warranty 2 years private, 1 year commercial.
  23. Who uses it already? A disability sailing organisation replaced a Suzuki 6 hp auxiliary on a 1,000 kg Coulam V20 Wheelyboat and a Torqeedo 1103 on a Sonar 22 with U2s, and bought a second for another Wheelyboat.

Zparq Z10 and what’s coming

The Z10 is newer than the Momentum range, so fewer figures are published yet. We will add more after the first UK trials in early 2027.

  1. What is the Zparq Z10? A Swedish 10 kW (15 hp equivalent) direct-drive electric outboard, billed as the world’s lightest 10 kW outboard.
  2. How light is it? The motor is about 15 to 17 kg without bracket or batteries, against around 50 kg for a typical 15 hp petrol outboard, so much less transom sag on light RIBs.
  3. How fast is it? 19 to 20 knots with one person aboard in decent conditions.
  4. What batteries does it use? Two portable packs of about 2.8 kWh and 20 kg each, 5.6 kWh in total, at 96 V nominal. Packs are expandable.
  5. How long does charging take? From a 13 A socket, about 3 hours from 10 to 80% and 4 hours from 10 to 100% on the standard charger.
  6. What is its range? Not yet published. UK trial data is promised for early 2027.
  7. How does it compare with the M10? Both are 10 kW. The Z10 is lighter and spins its prop faster (2,600 rpm against the M10’s 1,500 rpm), suiting faster, lighter planing hulls. The M10 has a bigger battery (6.4 kWh) and larger prop for towing and endurance.
  8. Tiller or remote? Both, with integrated electric trim and tilt in each version.
  9. Is there an app? Yes: speed, distance, remaining range and geofence alerts.
  10. How is it cooled? Passive Hyperflow hollow-core water cooling.
  11. When can we buy or try one? UK availability from early 2027, demonstrations from early 2027, and in the RescueREADY and TrialREADY fleet from spring 2027.
  12. What does it cost? [Add price once confirmed.]

Coming next

  • Momentum M15: [Confirm power, battery and launch date.] Momentum also lists a 6 kW M6 for lower-power displacement launches.
  • Competr electric outboard and faster RIBs: [Confirm product, power and dates.]
  • Focchi RIBs and Odyssey Boats: electric safety boat packages from 2027. [Confirm models.]
  • Electric jets: no exposed propeller, valuable near swimmers and casualties. Highfield already builds a ZeroJet electric jet tender.
  • Small utility catamarans: light, efficient hulls designed around electric drive for speed and range.

Safety boat packages

  1. What is a package? A matched hull, motor, battery, charger and controls, configured for your use and delivered ready to go, for example eGuardian 420 + M10, Rowing Solutions catamaran + M10, or Seastrike + M10.
  2. Do you sell off-the-shelf packages? We start from your real use, not a catalogue. Packages give a “from” price, but the final spec follows your workbook answers or GPS data.
  3. Why do you ask for GPS tracks? Most clubs find their real average speed and distance are far lower than expected. Data stops you buying more motor, battery and cost than you need.
  4. How do I record tracks? Any phone app that exports .gpx or .kml: Geo Tracker or GPS Logger on Android, Open GPXTracker on iPhone. Start before launching and stop after landing. We can also lend GPS trackers.
  5. Repower or new boat? If your hull is sound, repowering is usually the cheapest route. Many clubs replace a petrol outboard when it reaches end of life. Retrofit kits move with the motor to a new hull later.
  6. How many boats should we convert first? One. Phase in one boat at a time so volunteers build confidence and you gather your own data for the next purchase.
  7. Should we keep a petrol boat? Some clubs keep one higher-powered boat for open meetings or exposed conditions while the day-to-day fleet goes electric. We will tell you honestly if electric isn’t yet right for a role.
  8. Can we have console steering? Yes. Centre jockey consoles with remote throttle and hydraulic or cable steering are available, and suit RYA Powerboat Level 2 training where the throttle must be accessible to the trainer.
  9. Does it meet RYA training requirements? A centrally mounted throttle or jockey console keeps the throttle accessible for PB2. The M10’s MT-2 Trainer Mode adds dual kill cords. [Confirm current RYA guidance wording.]
  10. What about casualty recovery? We keep decks clear by routing battery cables through the hull. The eGuardian 420 has a boarding ladder and an optional 4:1 one-person casualty recovery system.
  11. How long does delivery take? [Add current lead times per package.]
  12. Do you deliver outside the UK? Yes. Rowing Solutions catamaran + M10 and Seastrike + M10 packages can be shipped worldwide, with batteries shipped as regulated dangerous goods.
  13. Will you train our volunteers? Yes: a handover and driver briefing at delivery, and video guides on our safety-boat YouTube playlist.
  14. What about insurance? Tell your insurer you’re switching propulsion. Insurers usually ask about battery storage and charging location. [Add insurer guidance or partner details.]
  15. Is it commercial or private use? Most clubs, schools and centres are treated as commercial use for warranty: 1 year on Momentum motors and batteries.
  16. Can we lease or rent? RescueREADY includes longer-term rental options for clubs. [Confirm lease or finance options.]
  17. Can grants pay for it? Many clubs fund electric safety boats through grants, member appeals and sponsorship. We can supply quotes, specifications and running-cost figures for applications.
  18. What will it save us? Fuel, oil and servicing. A typical session uses about 7.5 kWh, costing under 60p on an overnight tariff, against petrol for the same session. We’ll model your figures from your workbook.
  19. How long will it last? Motors are expected to last 10,000+ hours, about 15 years at 20 hours a week. Batteries are rated at more than 1,500 cycles to 80% capacity.
  20. What happens if something goes wrong? Contact us. We hold UK spares in Lymington, manage warranty claims and provide remote technical support.
  21. Can neighbouring clubs see one? Yes. We run club demo days with short talks and on-water sessions, and nearby clubs can join together.

Boat FAQs

Specifications are being added as manufacturer data is confirmed.

eGuardian 420

  1. What is it? Our own electric safety boat, built on the RiverBoat 420 hybrid catamaran hull.
  2. What is the hull made of? Eco-friendly polypropylene, manufactured using green Norwegian hydroelectricity and fully recyclable. It is highly impact-resistant and shrugs off knocks, so it suits a wide range of helms and crews.
  3. What sizes are there? 2.9, 3.5, 4.2 and 4.6 m.
  4. Does it plane? Yes, even with one person aboard, and gets onto the plane quickly at the 12 to 15 knots most clubs need.
  5. Which motor? The Momentum M10 is the most popular choice: it feels like 20 hp or more off the line to reach a casualty fast, and its battery lasts a full day at trolling speeds. Mitek electric outboards from 6 to 20 hp also work well with a different battery set-up, and motors up to a 30 hp equivalent can be fitted. We will develop a bespoke motor and battery combination for your needs.
  6. How heavy is it? The bare 4.2 m hull with ladder is about 185 kg; console and seat add about 45 kg.
  7. How do we recover a casualty? A boarding ladder is standard, and an optional 4:1 casualty sling and self-locking pulley lets one person recover someone one-handed.
  8. What consoles are available? A side-by-side console as standard, with single or double jockey consoles as options; a central jockey console keeps the throttle accessible for RYA PB2 training. For tiller-steered motors, it can have one or two simple bench seats instead.
  9. Where do batteries go? In the console, modular storage or under the bench seats.
  10. What maintenance does the hull need? A hose-down; minor damage can be repaired with simple tools.
  11. How stable is it? The hybrid catamaran shape gives a stable platform for crew and casualty handling.
  12. Who uses it? Norfolk Schools Sailing Association runs three with the M10.
  13. What does it cost? [Add “from” prices per size and package.]

Rowing Solutions electric catamarans

  1. What are they? Electric versions of the RS CAT14 and CAT16 coaching, umpiring and rescue catamarans, powered by the Momentum M10.
  2. Who builds them? Rowing Solutions, a family-run UK builder with a King’s Award for Enterprise, exporting launches to more than 20 countries.
  3. How fast are they? Bursts up to about 28 km/h, enough to follow elite men’s eights.
  4. Will one battery last a session? Yes: a full elite training session without recharging, and back-to-back sessions at coaching speed.
  5. How many people can they carry? The CAT2016 is rated for a maximum of 3 adults, RCD Design Category D (sheltered inshore waters). [Confirm for eCAT14 and eCAT16.]
  6. Why a catamaran? Twin hulls give a stable coaching platform with low wash.
  7. Where are they used? Electric Rowing Solutions launches are in use in the UK, Australia, Scandinavia and Europe.
  8. Can you ship one to us? Yes, complete with M10, battery and charger, anywhere in the world.
  9. Can we convert our existing petrol cat? Usually, if the hull and transom are sound. Send us the model and age.
  10. What does it cost? [Add “from” price, UK and delivered.]

Seastrike aluminium launches

  1. What are they? Fully welded aluminium boats built in Aldridge, West Midlands, popular as coaching launches and workboats.
  2. What hull types are there? Semi-flat for maximum stability, semi-vee for planing, and flat-bottom work platforms.
  3. What lengths? From 3.0 m (Seastrike 10) to 5.5 m (Seastrike 18), including the popular 12 (3.7 m) and 14 (4.3 m).
  4. Why aluminium? Tough, light and very low maintenance, with buoyancy built under the seats.
  5. Do they work with electric? Yes. British Rowing Plus notes Seastrike semi-flats perform well with electric motors, and Fulham Reach runs two SF12s with the M10.
  6. Console or tiller? Both; Fulham Reach uses remote console steering.
  7. Can you ship Seastrike + M10 packages abroad? Yes, pre-configured and exported worldwide.
  8. What does it cost? Seastrike Semi-Flat 12 hulls start from about £3,900 at retail. [Add package price.]

3D Tender XPRO RIB Alu 390 and 415

  1. What are they? French aluminium-hull RIBs with PVC tubes (Hypalon optional).
  2. How big? The 390 is 3.90 x 1.86 m; the 415 is 4.15 x 1.87 m.
  3. How many people? 7 in the 390 and 8 in the 415, CE category C.
  4. Do they plane on the M10? Yes. The RYA Midlands team tested the M10 on an XPRO 415 in March 2026 before choosing it for Phase 2.
  5. Is there a console option? Yes. An XPRO 415 with central jockey console and remote steering was shown at the Phase 2 launch.
  6. What draft? About 0.40 m.
  7. What does it weigh? [Add hull weights.]
  8. What does it cost? [Add package price.]

Highfield Classic range

  1. What is it? Highfield’s aluminium-hull Classic (CL) RIB range, widely used by clubs.
  2. Which sizes? CL 290 to CL 460, including the CL 310 (3.1 m, 5 persons), CL 340 (3.4 m, about 71 kg hull) and CL 360 (3.6 m, about 75 kg).
  3. Which motor? The U2 for light duties on the CL 290 to 310; the M10 for planing safety and coaching work from the CL 310 upward.
  4. How does the U2 perform on a CL 310? Momentum’s tests give about 7.7 hours at 3 knots and 1 hour at 5 knots.
  5. Is there console steering? Yes. Fulham Reach’s CL 310 has console steering with the battery in the bow locker.
  6. Is it good for adaptive sessions? Soft tubes and a stable hull make it a strong choice; Fulham Reach uses its CL 310 for adaptive rowing.
  7. Is there an electric jet version? Highfield builds a ZeroJet electric jet tender; ask us about jet options.
  8. What does it cost? [Add package prices.]

RescueREADY

  1. What is RescueREADY? Our trial programme for sailing, rowing and watersport clubs and centres: the club version of TrialREADY, with longer testing, data analysis and longer-term rental options.
  2. How is it different from TrialREADY? TrialREADY suits individual owners trying a motor on their own boat. RescueREADY is built around club duty: multiple volunteers, real race days and training, GPS data, feedback forms and a report for your committee.
  3. What can we trial? Momentum M10 (tiller or remote; short, long or extra-long shaft), Momentum U2, and the Zparq Z10 from spring 2027. Complete boat packages on request.
  4. Can we trial on our own boat? Yes, wherever practical. That gives the most useful data.
  5. How long is a trial? [Confirm standard trial lengths.]
  6. What does it cost? An administration fee plus delivery and return, depending on kit, distance and trial length.
  7. Do we get anything back if we buy? Yes. 50% of the administration fee is credited against your purchase.
  8. What’s included? Prepared and inspected kit, charged batteries, charger, driver briefing, remote technical support, data analysis and a committee report.
  9. What data do you collect? Speed, distance, session length, energy used and conditions via GPS, plus volunteer feedback, the same method as the RYA Midlands trial.
  10. Will you tell us if electric doesn’t suit us? Yes. Finding where electric doesn’t yet fit is as useful as proving where it does.
  11. Can several clubs share a trial? Yes. We can run a regional demo day, and the kit can move between neighbouring clubs.
  12. Who is insured during the trial? [Confirm insurance and liability terms for trials.]
  13. How do we book? Send your workbook answers via the form, email or a call, and we’ll recommend kit and agree dates.

Sources

Version 0.2.0 · released 4 November 2026