Tankoa S501 49.8m (2017 / 2023 Refit) – 6 Cabins, 4,500nm Range – Viareggio, Italy

This 49.8-metre Tankoa S501 custom motor yacht, delivered in 2017 and comprehensively refitted in 2023, is a highly refined sub-50m superyacht blending modern European engineering with cohesive designer styling. Built entirely in aluminium (hull and superstructure) with a semi-displacement hull form, she offers an excellent balance of performance, efficiency, and generous onboard volume. With three teak-laid decks, 496 GT, and proven Lloyd’s Register technical requirements referenced in her build standards, she presents as a serious ownership platform with strong long-range credentials from Viareggio, Italy.

Construction, Naval Architecture & Design
The yacht’s aluminium structure supports reduced overall weight, improved fuel efficiency, and strong rigidity while maintaining refined onboard comfort through careful insulation and layout planning. Dimensions include 49.8m LOA (49.41m LWL), 9.4m beam, and 2.4m draft, with a displacement of approximately 380 tonnes. Naval architecture is by Tankoa Yachts, while both exterior and interior design were developed by Francesco Paszkowski Design, creating a unified contemporary aesthetic with practical marine architecture. The hull is finished in white for timeless appeal and heat reflection.

Performance, Machinery & Range
Propulsion is by twin MTU 8V 4000 M54R diesels (1,000 hp each / 2,000 hp total) driving a twin-screw system designed for redundancy, reliability, and smooth maneuverability. Performance includes a 14-knot cruising speed and a 16-knot maximum. With 69,000L fuel capacity, she offers an approximate range of 4,500 nautical miles at cruising speed, with stated transatlantic capability potential. Freshwater capacity is 23,000L, supporting extended time at sea and reduced dependency on frequent port calls.

At-anchor stabilizers are installed to reduce roll and improve comfort during anchorage stays. Engineering spaces are arranged to professional standards with clear service access, contributing to long-term reliability and ease of ownership. Noise and vibration management are addressed through aluminium construction benefits, insulation techniques, and thoughtful machinery placement to keep guest areas quiet and refined during extended operation.

Guest Accommodation & Owner-Focused Layout
Accommodation is for up to 12 guests across 6 cabins, designed for privacy and flexibility for private or charter-oriented use. The full-beam owner’s suite is a standout: private study, dressing table, dedicated lounge seating, ensuite bathroom with his-and-hers basins, spa-style shower, and walk-in wardrobe. Opening side terraces expand the suite into an indoor-outdoor private retreat—rare within this size category—supported by a discreet mini refrigerator for convenience.

The VIP cabin is equally well finished with bespoke furnishings, leather detailing, silk curtains, onyx-finished ensuite, large television, and its own mini refrigerator. Four additional guest cabins on the lower deck include three doubles and one twin with conversion capability via an additional Pullman berth (double or triple flexibility). Each guest cabin features ensuite facilities and integrated refrigeration, maintaining consistent comfort standards throughout the yacht.

Interior Styling & Key Social Spaces
The interior palette combines natural and bleached teak with dark polished rosewood for a modern, timeless feel inspired by mid-century refinement. Large windows enhance natural light and maintain a strong visual link to the sea. The main saloon features a Jerusalem stone wall with burnished brass detailing, carefully illuminated as a centerpiece. Curved teak staircases and leather-lined walls reinforce a cohesive design language across decks.

Exterior Entertaining, Beach Club & Wellness
Exterior spaces are optimized for social cruising. The aft main deck offers sofas and loungers for up to 14 guests beneath UV-filtering awnings, with fold-out terraces expanding usable deck area and creating a stronger connection to the water. The upper aft deck is designed as a primary dining terrace with a 14-seat table, integrated refrigeration, icemaker, and concealed television system.

The sundeck supports relaxation and entertainment with a spa pool, sun loungers, chaise longues, hardtop with retractable awning, adjustable louvers, and a fully equipped bar including teppanyaki grill and television. The transom opens to an expansive beach platform for direct sea access, alongside entry to a well-equipped gym and a day head with steam shower. A dedicated tender garage keeps tenders and toys secure without disrupting deck aesthetics.

Flag, Compliance & Sales Notes
Currently French-flagged, the yacht carries strong regulatory credibility for European and international operations. The 2023 refit represents meaningful lifecycle investment, reinforcing turnkey readiness and brokerage appeal. Buyers are encouraged to schedule inspection and sea trial to assess performance, comfort, and operational characteristics. Standard superyacht transaction steps apply (MOA, escrow deposit, survey/sea trial conditions, closing), with documentation and records supporting a smooth transition to new ownership.

Call to Action
Contact KaterBlue Marine Services to receive the complete specification sheet, refit details, and to arrange a private viewing and sea trial in Viareggio. We can coordinate surveyors, escrow timelines, and a structured handover for immediate operational readiness.