The XPM78 Vanguard is the second in a series of builds to a 78-foot design by Artnautica.  Built to UK MCA Category 0 (Unrestricted) standard, she is capable of safe, long-range operation worldwide under most sea and weather conditions.

Vanguard is built to commercial standards including full redundancy of mission-critical systems.  She is fitted with twin JD 4045 engines and hybrid electric drives backed by a large split LiFePO4 Battery bank.  Power storage is sufficient for about 4 days at anchor without the need to operate diesel generators.

Vanguard is in production (May 2021) at Naval Yachts in Antalya, Turkey.

Explorer Yacht

XPM 78 Explorer Yacht



  • REGISTERED LENGTH22.4m / 73.6’ (UK MCA)
  • LOA23.8m / 78.2’
  • LWL23.8m / 78.2’
  • BEAM5.13m / 16.8’
  • DRAFT1.3m / 4.2’
  • DISPLACEMENT41,000 kg / 90,000 lbs (half tanks)
  • GROSS TONNAGE66.8 tons (calculated by Bureau Veritas)
  • NET TONNAGE50.12 (calculated by Bureau Veritas)
  • AIR DRAFT 6.4m / 21’ (top of arch, not including antennae)
  • CLASSIFICATIONUK MCA Category 0 (MGN 280 <24m, Unrestricted Service), CE
  • STABILITY(-)180 angle of vanishing stability, hull will dry upright on firm ground
  • CRUISING SPEED10.5 kts
  • MAX. SPEED 15.0 kts (excess of hull speed but without Hybrid boost)
  • RANGE @10kts7000+ nm
  • FUEL CAPACITY15,000 L / 4000 USG (rounded)
  • WATER CAPACITY7,000 L / 2000 USG (rounded)
  • Hull and superstructure, welded aluminum with five watertight bulkheads
  • 25mm aluminum Keel Bar running from bow to transom
  • Hull above waterline 6 & 10mm plate, below the waterline, is 12 & 15mm plate
  • Double skin hull below the waterline for central 3 watertight compartments also forming water and fuel tanks. Substantial grounding plates to each shaft skeg.
  • 26mm tempered & laminated glazing
  • 2 Exterior Bofor watertight aluminum doors
  • 10 aluminum deck hatches with 16mm laminated glass
  • 2 access hatches for forepeak and engine room
  • ENGINES2 by 4045 AFM85 John Deere M1 continuous rated 120kW at 2300 RPM
  • GEARBOX2 by 5050 Twin Disc Reduction boxes 2.5:1 with down-angle
  • EXHAUSTHalyard wet exhaust, 3” dry stack 5” wet with combi Silencer/Water Separator
  • HYBRID drive2 by ESCO PHT parallel hybrid step down drive 1.47:1 reduction with isolating clutch
  • HYBRID 2 by 30kW @ 1000 rpm Praxis high voltage DC propulsion motors ,water glycol cooled, 96kW generation at 2300 RPM
  • PROPELLER2 by Bruntons AutoProp 750mm 900 RPM with shaft and self-aligning drive bearing
  • BOW THRUSTSide Power 12kW Extended Run time proportionally controlled
  • STEERINGWills Ridley twin independent hydraulic rudder controls
  • Potable waterDelfin watermaker, Kabola heater, Webasto calorifier
  • HVACWebasto chiller & air handlers
  • FireSeaFire engine room automated fire suppression, Praxis detection, SW Fire suppression
  • StabilisersDMS Zero Speed, Foldable
  • CraneCommercial marine hydraulic Knuckle crane for tender and stores
  • AncilaryWell equipped stores and workshop
  • BatteriesPraxis 120kWh LiPO power bank, Firefly 2kWh engine starter bank
  • InvertersPraxis high power liquid cooled, Victron tertiary services
  • Solar panels8kW conformable panel PV arrays, Victron MPPT feeding battery bank
  • MonitoringPraxis electrical system integration on redundant Ethernet backbone
  • NavigationTime Zero integrated navigation software for Nav, weather, tide
  • Furunonone IMO for Radar, GPS, Compass, AIS, VHS integrated in to TimeZero, speed, depth, trim, roll, Sonar/depth
  • HelmPraxis integrated helm station for steering, joystick, jog, auto-helm, DP functions
  • PraxisIntegrated helm station and ship MIMIC diagrams covering nav and all machinery plus ship alarms, CCTV, horn and nav light arrays
  • Helm ChairSHOX multi-adjust and shock mitigating helm chairs to Helm & Flybridge
  • AnchorsPrimary - Rocna (oversized), Secondary - Fortress kedge, Drogue and Para sea anchor
  • WindlassMaxwell with control from foredeck and helm station
  • Chain100m galvanized
  • WinchesLewmar for kedging on Foredeck and Transom
  • CleatsVessel designed with 4 drydock lifting cleats secured through hull
  • BoschCooker, fridge freezers, microwave, cooktop, washing, drying
  • ToiletsVacuflush Vacuum Generator with Bidet addition
  • Black & GreyIntegral Grey water and Polypropylene Black water tanks
  • WashdownFreshwater washdown at forepeak, aft deck and transom
  • Hull5 m, aluminum planing hull with commercial rub strake and bow push fender
  • PropulsionYanmar 75kW diesel inboard, Castoldi Jet Drive
  • NavFuruno Navigation, AIS & VHF, fish finder/depth
  • SeatingSHOX shock mitigating helm chairs

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