EC18
An 18-metre foil-assisted catamaran for pilot, patrol, SAR, fire, and workboat operations. Multi-mission platform delivering the foil-assist energy advantage on transit-heavy duty cycles.
[HERO IMAGE: render of EC18 in operating context — patrol or SAR configuration, open water.]
[Primary CTA: Download the EC18 spec sheet (PDF)] [Secondary CTA: Book a 30-minute technical briefing]
At a glance
| LOA | 18 m |
| Beam | [TBC] m |
| Configurations | Fully electric · Hybrid · ICE-powered |
| Cruise speed | [TBC] kn |
| Dash speed | [TBC] kn |
| Range | [TBC] nm at cruise |
| Mission configurations | Pilot · Patrol · SAR · Fire · Workboat |
| Classification | DNV HSLC |
The vessel
The EC18 is the workboat-class member of the EnviroCat platform — an 18-metre foil-assisted catamaran designed for multi-mission service in port and coastal operations. Pilot organisations, patrol agencies, search and rescue services, harbour fire services, and workboat operators face a common set of operational requirements: sustained patrol or station-keeping interspersed with rapid dash response, multi-shift duty cycles, equipment-heavy deck configurations, and reliability under sustained service intervals.
The foil-assist hull delivers its drag and energy advantage at cruise — where workboats spend significant duty-cycle time on transit and dash operations. For agencies and operators going zero-emission under port or municipal mandates, the foil-assisted electric configuration unlocks duty profiles that pure-electrification of a conventional hull cannot reach.
[IMAGE: GA drawing — public-detail version, multi-mission deck layout reference.]
Operator outcomes
More on-station and on-transit time per charge or fuel load. Patrol, pilot, and SAR duty cycles are dominated by transit between calls or stations. Foil-assist’s drag reduction at cruise translates directly into either extended on-station time on the same energy budget, or smaller battery/fuel-tank installation for the same duty cycle. For diesel-to-diesel EC18 newbuild replacement, expected fuel reduction is proportional to the up-to-50% drag advantage.
Zero-emission readiness for ports under mandate. Ports and municipalities setting zero-emission requirements for harbour craft face the structural problem that conventional electric workboats often cannot meet duty profiles within battery weight constraints. The foil-assisted electric EC18 reduces energy consumption by over 80% versus a conventional diesel comparator, making electrification practical for a wider duty-cycle envelope.
Multi-mission flexibility on a single platform. The same hull and propulsion package supports pilot, patrol, SAR, fire, and workboat configurations. Operators with multi-service fleets benefit from common training, common spare parts, common maintenance schedules, and a single qualification path across mission types.
Specifications
Hull
| Type | Foil-assisted catamaran, passive foil-assist, aluminium |
| LOA | 18 m |
| Beam | [TBC] m |
| Draft | [TBC] m |
| Depth | [TBC] m |
| Displacement (light) | [TBC] t |
| Displacement (loaded) | [TBC] t |
Propulsion (configurable — multiple options supported)
| Mechanical propulsion | Controllable-pitch propellers (Kumera Helseth, Servogear), Volvo Penta IPS Electric pods, or waterjet propulsion |
| Electric drive (electric and hybrid configurations) | Brunvoll Mar-El, ZEM, or other compatible suppliers |
| Total continuous power | [TBC] kW |
| Total peak power | [TBC] kW |
Propulsion selection reflects mission profile. Patrol and SAR duty cycles often favour pod systems or CPPs for low-speed manoeuvring response combined with dash-speed capability. Waterjet propulsion suits shallow-water operations and high dash-speed requirements. See Approach for the analytical-engagement model that maps mission profile to configuration.
Energy storage (electric and hybrid configurations)
| Installed energy | [TBC] kWh |
| Usable energy | [TBC] kWh at [TBC]% DoD operational window |
Charging
| Charging standards supported | CCS, MCS |
| Typical charge rate | [TBC] kW MCS |
Operating envelope
| Cruise speed | [TBC] kn (design) |
| Dash speed | [TBC] kn |
| Sea state envelope | [TBC] |
| Range (at cruise) | [TBC] nm |
Mission configurations
The EC18 deck and topside are engineered for adaptation to mission requirements. Standard configurations include pilot transfer, harbour patrol, SAR, harbour fire (with fire monitor and pump integration), and workboat (deck crane, MOB recovery, towing fittings). Custom mission integrations are scoped through the Custom design programme.
Classification and build standard
| Classification | DNV HSLC |
| Flag | Per operator requirement |
| Build standard | HSC code-compliant |
Detailed performance curves, weight breakdowns, and mission-specific configuration documents are available to qualified buyers under NDA.
Proof and partners
- Hull validation — tank-tested at Stadt Towing Tank; CFD-validated.
- Classification — designed to DNV HSLC notation.
- Technology partners — Kumera Helseth, Servogear, Volvo Penta, Brunvoll, Brunvoll Mar-El, ZEM, Maritime Engineering, DNV. See Technology for the full partner ecosystem.
Use cases
Pilot vessels. Port-to-vessel pilot transfer. The dash-speed capability matters for response time; the foil-assist energy advantage matters for daily fuel cost across multi-shift operations.
Patrol craft. Harbour, coastal, and inshore patrol — port authority, customs, fisheries, environmental agencies. Transit-heavy duty cycles benefit directly from the drag advantage.
Search and rescue. Coastal and inshore SAR — fast response, multi-crew, equipment-heavy. The platform supports the dash response + sustained operations + crew comfort requirements common to SAR services.
Harbour fire response. Fire-fighting and rescue platforms with pump and monitor integration. Foil-assist energy efficiency reduces operating cost on transit and patrol legs.
Workboats. General-purpose workboats with deck crane, towing capability, MOB recovery, and other mission equipment. Operational profile dependent on operator role.
Downloads and next step
- Public spec sheet (PDF) — full specification one-pager. [Download — lead-capture form]
- Mission configuration briefs — pilot, patrol, SAR, fire, and workboat configuration specifics. Available after lead-capture.
- NDA materials — full performance curves, mission-specific GA drawings, weight breakdowns. Available after NDA execution.
Agencies and operators evaluating the EC18 for a specific mission profile should request a duty-cycle analysis — the consultative engagement described on the Approach page. The analysis maps mission profile, response-time requirements, and operating budget to the appropriate configuration.
[Book a 30-minute technical briefing] [Download the public spec sheet]