S/V Howdoo is a Cartagena, Spain based 2024 Nautitech 40 Open For Sale By Broker. Responses to inquiries may come from a broker who is representing the owner as a fiduciary. This owner requires financial settlement only. No trades.
“Howdoo” was purchased and outfitted for an extended family offshore and off grid adventure. Plans have changed, so she is now fully prepared and available for your blue water journey.
The Nautitech 40 Open is designed for owners who value true sailing performance without sacrificing comfort or safety. Dual helm stations provide excellent visibility and control for both sailing and docking, while the low boom and efficient keels deliver impressive upwind capability. The signature “Open” concept creates a seamless, single level living space from helm to cockpit to saloon/galley — safe, social, and ideal for passagemaking and life at anchor.
Howdoo is the desirable Explorer version with the sought after owner’s layout, featuring the most recent Millesime interior styling inspired by the award winning Nautitech 44. Beyond her well selected factory options, she has been upgraded with a professionally designed custom energy system including top tier solar, lithium batteries, and inverter/charger components.
Her blue water sail suite is equally impressive, featuring a gennaker and Parasailor — a turnkey setup for the ARC Rally and long range cruising.
We welcome your inquiries. As experienced Nautitech dealers with extensive international sales and cruising support experience, we are well equipped to help you take the next step toward your adventure.
Lightly used and Bluewater Ready - Solar, Lithium, Watermaker, Parasailor
- Large solar power
- Top of the line lithium battery system
- Watermaker
- Parasailor !
Videos
Specifications
| Name | S/V Howdoo |
| Make | Nautitech |
| Model | 40 Open |
| Year | 2024 |
| Type | Multihull Sailboat |
| Builder | Nautitech |
| Designer | Marc Lombard |
| Construction | Fiberglass -Vacuum infused technology |
| Cabins | 3 |
| Heads | 2 |
| Galley | Up |
Dimensions
| Loa | 39'3" (12.0m) |
| Lwl | 39'2" (11.9m) |
| Beam | 22'7" (6.9m) |
| Draft | 4'4" (1.32m) |
Tankage
| Fuel Tanks | 106 gals |
| Water Tanks | 158 gals |
Performance
| Engines | 2 x Volvo Penta D1-30 |
| Engine Hours | 750 |
| Wiring | 220V |
| Displacement | 18739 lbs |
| Sails | Full battened Mainsail with custom stackpack and lazy jacks Self-tacking jib on furler Gennaker on continuous line furler Parasailor - New Gen version with "Bluewater" upgrade. Complete with "Easy Snuffer" and cruising bag. |
Layout Diagram

Inventory
Construction
- Vacuum infused technology for optimal strength/weight ratio
- Divinycell PVC closed-cell core (no balsa)
- Structural bulkheads laminated to the hull
- Watertight bulkheads fore and aft in each hull
Cockpit
- Open-plan layout with helms to the quarters for improved sailing ergonomics and larger cockpit space
- Perfect view of sea and sails from the cockpit
- Seamless integration with the saloon via a massive multi-segmented cockpit door
- All on one level from helm to galley/saloon for clear and safe communication
- High-quality, water- and UV-resistant upholstery; full set of cockpit cushions
- Carbonautica helms
- Full cockpit lighting
- Full cockpit enclosure with doors
- Cockpit shower with hot and cold water
Interior
- 360-degree panoramic view from saloon and galley with forward-facing chart table
- Saloon table lowers to form an additional bed or standing watch position
- Owner’s hull: whole hull dedicated to owner with queen bed aft, owner’s desk midship, massive shower and toilet forward; separated walk-in shower compartment
- Starboard hull: large aft bed and guest cabin forward; dedicated bright and functional bathroom with shower
- Extra cabin in starboard forepeak with mattress, upgraded gelcoat finish, ventilation, light, and access from starboard forward cabin
- Outstanding natural lighting throughout
- High level of interior fit and finish; in excellent condition
- Washing machine — 3 kg
- Blinds on all cabin hull windows
- Upgraded mattresses throughout
- Blackout shades and mosquito nets for all hatches
- Fans throughout the vessel
- Full external sunshades for the saloon with openings for hatches; all hatches are flush
- Upgraded interior lighting including strategic indirect and courtesy lighting
Galley
- Large, seaworthy galley for a 40' catamaran
- Seamless connection to the cockpit
- Ample surface and storage space
- ENO LPG 3-burner stove with gourmet oven
- Refrigeration: galley fridge 130 L, cockpit fridge 65 L, optional 55 L freezer
Mechanical
- Volvo 30 hp engines × 2 — approximately 750 hours
- Folding propellers for improved sailing performance
- Excellent engine access
Electrical and Plumbing
- Professional aftermarket installation; off-grid ready solar and lithium house bank
- Solar array: 12 panels, total 1452 W; Tough+ Black flush panels
- 6 × MoonRay 320 MPPT controllers
- 8 × Smart Lithium batteries — total 864 amp-hours
- Victron Quattro inverter/charger 12/3000 — 3000 W
- 2 × Mastervolt Mac Plus 12/12-50 DC-to-DC chargers
- USB plugs throughout
- LED spreader lights
- Watermaker: 12V Schenker ZEN 50 — 60 L/hr capacity
- "Quiet Flush" electric toilets × 2 — freshwater flush
Electronics
- Full B&G electronics package
- Each helm: B&G Zeus 9" plus B&G Triton multifunction display
- Separate B&G chartplotter at the forward-facing chart table
- B&G autopilot controllable from either helm or the chart table
- B&G 4G Broadband digital radar
- B&G AIS (receive and transmit)
- B&G VHF radio with DSC and wireless remote
- Fusion marine stereo
Rigging and Deck Gear
- Upgraded electric winch for the main halyard
- Lewmar anchor windlass with remote and chain counter
- Delta anchor (20 kg) with 60 m of chain
Additional Equipment
- Tender: Highfield Hypalon 3.1 m RHIB (2024)
- Outboard: Suzuki DF15AS (2024)
- Liferafts: 6‑pax and 4‑pax with grab bag (2024)
- Tiki inflatable gangway / passerelle
- Full safety equipment including OceanSignal EPIRB3 and 2 × OceanSignal MOB1
- Portable VHF
- 8 × 165 N automatic lifevests with tethers (4 unused)
- Topomarine rescue binoculars with compass
Maintenance
- Coppercoat antifouling — estimated 10-year life
- Last haul-out: December 2025
























