The Bestevaer 55 ST represents a singular intersection of rugged high-latitude utility and sophisticated naval architecture. Designed by the renowned Dykstra Naval Architects and built by KM Yachtbuilders in the Netherlands, this aluminum cruiser is part of a lineage inspired by Gerard Dykstra’s personal sailing requirements. The "ST" designation refers to the "Straight" stem, a hallmark of the series that maximizes waterline length and provides a modern, aggressive profile contrasted against a classic pilot house. Constructed primarily from 5083-H111 aluminum (and often Alustar for enhanced strength), the 55 ST is a semi-custom platform intended for short-handed crews who require a vessel capable of transitioning from tropical reef navigation to ice-strewn polar waters without compromise.
Bestevaer 55 ST Information, Review, Specs
- Make
- Bestevaer
- Model
- 55 ST
- Builder
- KM Boatbuilders
- Designer
- Dykstra Naval Architects
- Number Built
- Production Year(s)
- 2009 - ??
Sailing Performance & Handling
The Bestevaer 55 ST is engineered for high average speeds rather than bursts of planing performance. Because the plumb bow extends the waterline to nearly the full length of the hull, the yacht achieves a high theoretical hull speed, allowing it to maintain 8 to 9 knots comfortably in a breeze. According to technical insights from KM Yachtbuilders, the hull form is optimized for "sea-kindliness," featuring a relatively narrow beam compared to modern French production cruisers. This narrower entry allows the 55 ST to pierce waves rather than slam over them, a critical trait for long-distance passage making.
The handling characteristics are notably tactile. While many 55-footers move exclusively toward twin-wheel steering, several Bestevaer 55 units have been commissioned with a single large tiller or a single wheel, emphasizing direct feedback. The boat is typically rigged as a cutter to provide versatile sail plan options in heavy weather. With a moderate displacement-to-length ratio, the 55 ST feels planted and stable. Performance is further enhanced by the optional deep-keel or hydraulic lifting keel configurations; the latter allows the boat to access shallow estuaries while maintaining a deep, high-ballast-ratio draft for upwind efficiency in open water.
Interior Comfort & Variations
Inside, the Bestevaer 55 ST is defined by its "pilot house" or "doghouse," which serves as a sanctuary for the watch-keeper. This area typically includes a second helm station or at least a comprehensive navigation suite with 360-degree visibility, allowing for "inside sailing" in inclement weather. The transition from the cockpit to the pilot house is on a single level, emphasizing safety and ease of movement.
The interior layout is semi-custom, but most hulls feature a three-cabin arrangement. The owner’s cabin is typically situated forward, benefiting from the volume provided by the plumb bow. A signature element of the Bestevaer aesthetic is the "industrial-chic" finish, often utilizing white-painted aluminum bulkheads paired with high-quality timber like bamboo or oak to prevent the interior from feeling cold. Because the 55 ST is built on the same core engineering as its siblings—the slightly smaller 53 ST and the larger 62 ST—owners often borrow layout features from these models, such as the "wet locker" placement near the companionway for foul weather gear.
Popular Mentions & Media
The Bestevaer series has gained significant cultural traction among serious voyagers due to its association with Gerard Dykstra, the designer of the Maltese Falcon and Black Pearl. Dykstra’s own vessel, Bestevaer 2, though a 53-foot version, serves as the spiritual blueprint for the 55 ST and has been featured extensively in sailing media as the archetype of the "rational" cruiser. The model’s reputation for ice-class capability has made it a frequent subject in publications like Yachting World and Classic Boat, where it is often cited as a modern classic that prioritizes function over fleeting design trends.
Known Issues & Buyer’s Checklist
Prospective owners of a pre-owned Bestevaer 55 ST should focus their surveys on the complexities of aluminum maintenance and the custom nature of the systems.
- Galvanic Corrosion & Electrolysis: While the 5083 aluminum used by KM Yachtbuilders is highly sea-water resistant, the integrity of the electrical isolation must be verified. Check that the "floating" electrical system (standard on high-end aluminum builds) has not been compromised by subsequent owner-installed electronics.
- Lifting Keel Mechanism: For hulls equipped with the swing-keel or lifting-keel option, the hydraulic rams and pivot pins are high-load points. Inspect for wear in the bushings and ensure the hydraulic fluid shows no signs of contamination.
- Paint Adhesion: Bestevaers are often left unpainted above the waterline for low maintenance. If the boat is painted, inspect the "termination" points (where paint meets bare aluminum hardware) for bubbling or oxidation, which can indicate poor primary etching or moisture ingress under the coating.
- Insulation Voids: High-latitude boats rely on sprayed-on or closed-cell foam insulation. Buyers should use thermal imaging or physical inspections in lockers to ensure there are no "cold bridges" where condensation could form against the hull.
Community & Resources
The primary hub for technical data and build history is the KM Yachtbuilders shipyard in Makkum, Netherlands. They maintain an active archive of hulls and frequently host "Experience Days" where prospective and current owners can discuss technical modifications. While there is no formal independent "Class Association" due to the semi-custom nature of the builds, the community of Bestevaer owners is tightly knit, often sharing voyage reports and technical modifications through the manufacturer’s curated "Bestevaer Community" portals.
The Verdict
The Bestevaer 55 ST is an uncompromising tool for the offshore sailor who values structural integrity and timeless design over maximum interior volume. It is a "sailor’s boat" that rewards those who venture into challenging conditions.
Pros:
- Exceptional Durability: The Alustar hull construction offers superior impact resistance compared to GRP.
- All-Weather Protection: The pilot house design significantly reduces crew fatigue during long passages.
- Shallow Draft Versatility: The lifting keel variant provides access to areas usually off-limits to 55-footers.
Cons:
- Price Point: The high cost of aluminum construction and Dutch craftsmanship puts it in the premium luxury bracket.
- Maintenance Rigor: Requires strict adherence to electrical isolation protocols to prevent hull corrosion.
- Narrower Interior: Compared to modern "med-style" cruisers, the beam-to-length ratio results in less cavernous living spaces.
Measurements
Construction & Hull
- Construction Material
- Aluminum
- Hull Type
- Monohull Sailboat
- Keel Type
- Bulb
- Rudder
- 1x Spade
- Ballast
- 11684 lbs (Lead)
- Displacement
- 50706 lbs
- Water Capacity
- 195 gal
- Fuel Capacity
- 185 gal
Dimensions
- Length Overall (LOA)
- 55.45 ft
- Waterline Length (LWL)
- 50.43 ft
- Beam
- 15.22 ft
- Draft
- 7.55 ft
- Max Headroom
- -
- Air Draft
- 78.74 ft
Rig & Sails
- Rig Type
- Cutter
- P (Main Luff)
- 69.55 ft
- E (Main Foot)
- 22.54 ft
- I (Foretriangle Height)
- 72.15 ft
- J (Foretriangle Base)
- 19.69 ft
- Forestay Length (est)
- 74.79 ft
- Sail Area
- 1495 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.46
- Ballast / Displacement Ratio
- 23.04
- Displacement / Length Ratio (D/L) Ratio
- 176.5
- Comfort Ratio
- 40.19
- Capsize Screening Formula
- 1.65
- Hull Speed
- 9.52 kn