77m Superyacht – Luxury Yacht Overview & Specs

Inspect the propulsion stack now: request a full motor and weight audit from the designer and shipyards, with mercury engines clearly documented and labeled in the specs. This provides a solid baseline for performance and resale value before you enter negotiations.

The 77 m hull defines a long, sinuous profile that prioritizes sea-keeping and guest comfort. Length 77 m, beam nearly 12.7 m, draft 3.9 m. Weight approximately 3,100 tonnes, depending on interior fit and deck options. The power package often combines twin diesel motors with hybrid systems as a future-ready choice. Mercury engines are a common reference point in this segment, tested for reliability. On deck, a pool surrounded by lounges creates an inviting outdoor living area while preserving observability and balance.

For a buyer, address the following: verify the assembly schedule with the manager of the project, request shipyards’ build logs, and compare brand options for interiors and exterior painting. Seek concrete advice on stability, load distribution, and vibration control. Look for documented test results from sea trials and confirm spare parts availability for the engine room and critical systems. When budgeting, expect figures in the million range for custom interiors and systems upgrades.

The designer’s profile matters: vetted naval architects and studio brands ensure a cohesive look and practical layout. Ask for an iteration plan that includes particular rooms and flow between salons, galley, and staterooms. If you adapt the layout for long-range cruising, confirm the weight balance and ballast planning with the captain’s team. A trustworthy manager coordinates timelines, permits, and crew training, ensuring the yacht remains on schedule and within budget.

Choose shipyards with a proven assembly track record; examine their aftercare programs and formalize a maintenance schedule in the contract. Request a detailed address list of suppliers and spare parts, and set up an advisory channel with the design team to minimize scope creep. With an pool of specialists and a well-defined brand strategy, the 77 m ship becomes a predictable project rather than a guesswork exercise.

PI 77m: Feadship Full Custom Pi Specifications

Choose PI 77m as the base for Feadship’s Full Custom Pi program to lock in a robust format and premium engineering right from the start.

1. Format & approach
   • Format: 77m hull with full-custom Pi specifications, owner-integrated workflow, and completecredits documentation to track decisions and approvals.
   • Particular emphasis on a layout which optimizes light, circulation, and service flows across three guest decks and the sun deck.
   • Type and main systems are defined early to align with regulatory and marina requirements and to simplify future expansions.
2. Layout, decks, and guest experience
   • Layout prioritizes seamless transitions between the main salon, dining areas, and exterior decks, with a raised skylight gallery on the upper tier. One standout feature is a skylight gallery that floods the foyer with natural light.
   • Three guest decks plus a sun deck deliver generous exterior space; the exterior palette and finishes lean toward a caribbean-inspired warmth.
   • The outboard tender garage stores two large tenders; a remote control system manages security and docking, while sails-inspired exterior details enhance the profile.
   • The exterior form includes a sunseeker-inspired silhouette, integrated with Feadship-grade rigidity and quiet operation at anchor.
3. Engineering, propulsion, and fuel
   • Engineering package blends hybrid propulsion with conventional diesels, enabling a quiet mode at hull speed for efficient cruising and reduced emissions.
   • Fuel capacity supports long-range Caribbean itineraries, with redundant systems and remote diagnostic capabilities for maintenance oversight.
   • Outboard stabilization and a refined thruster layout ensure confident handling in swell; syzygy-type alignment reduces vibration and enhances comfort throughout decks.
4. Interior concepts, design partners, and features
   • Interior design partnerships include mondomarine for technical cabinetry and fixtures; turismo-inspired wood tones and high-gloss finishes deliver warmth and depth.
   • Key features include a private owner’s deck with a skylight, cinema, gym, spa, and a wellness suite across two levels.
   • Remote climate control, lighting scenes, and service workflows are integrated into a centralized interface for effortless guest and crew operation.
5. Offered configurations, options, and future-proofing
   • Offered layouts cover formal dining, a private library, and gallery spaces; each can be reconfigured for private ownership or charter work.
   • Completecredits tracking provides visibility into part orders, schedule milestones, and commissioning checklists, with clear owners’ approvals at each stage.
   • Developments in sensors, navigation, and safety systems keep the PI 77m up to date without driving complexity on board.
   • They can specify alternative layouts for guest suites, crew accommodations, and recreational zones to match charter programs or long-range cruising.

Exterior Dimensions & Hull Form

Opt for a long waterline and a slender midsection to maximize speed efficiency and minimize drag. Length overall is 77 m, beam approximately 12.4 m, draft about 4.0 m, with a waterline length around 68 m. Displacement runs approximately 2,900–3,200 tonnes, delivering a stable platform for extended voyages on superyachts.

A full-displacement hull with a bulbous bow and a clean transom delivers seakeeping and fuel economy for long passages. The hull rides smoothly through head seas, while a low vertical center of gravity helps close crew access and deck operations.

franchini influence shapes the slender, sport-oriented profile, with sunseeker cues also visible in proportions and deck ergonomics. The companiesthe network coordinates yards across the country to align performance targets and construction standards, supporting commissioning milestones and ensuring consistency.

Consider a wing deck arrangement to maximize outdoor spaces without enlarging the hull, and ensure cabinsthe layout keeps guest suites near the center of gravity for balance. The wing sections improve windage management, and the flush deck with a broad bow terrace creates a strong visual profile. installed systems, from stabilizers to tender storage, are integrated to preserve interior volume while maintaining exterior clarity.

Deck hardware uses brass fixtures to resist corrosion and maintain a timeless look, while close attention to hull appendages minimizes spray and noise. This approach aligns with country traditions of long-range design, with faith in proven hydrodynamics guiding predictability at sea.

The commissioning phase validates the hull form, and the team has successfully demonstrated target performance during sea trials. The design supports a crew-friendly layout and a sport-oriented lifestyle aboard, with approximately efficient cruising between ports also favored by owners who value reliability and comfort. also, the project keeps a close line to the original brief and maintains a robust platform for luxury operations on superyachts.

Propulsion, Performance & Range

Recommendation: select a diesel-electric hybrid propulsion with dual azimuth thrusters and redundant gensets to maximize stability and efficiency, including quiet operation near the stateroom.

For a 77m superyacht, cruise speed sits around 12–14 knots, top speed runs 16–18 knots, and a practical range is 6,000–7,500 nautical miles at 12 knots depending on building specifics and fuel load. In this setup, two propulsion lines or hybrid pods deliver 2×1,300–2,400 kW electric motors per pod, paired with efficient shafts. Double redundancy in propulsion and electrical systems keeps operations smooth in rough seas and during port calls.

Acoustic and vibration control boost guest comfort, with floating floors and isolation reducing noise in the stateroom area, while the diesel-electric layout lowers engine room vibrations by design. This configuration supports long-range itineraries and tight charter schedules, improving reliability for commercial operations at sea.

In design terms, palumbo and giordano input shapes the hull for stability and performance, while the interior layout addresses market demand for generous spaces and quiet operation. The system architecture offers energy efficiency with storage options to run hotel loads during tender operations and at anchor. Building teams routinely test optimization in model basins to verify claimed range and performance.

Advice for buyers: verify warranty coverage, check classification compliance, and demand a credible endurance test plan that runs main and hybrid systems for at least 4,000 hours. In november, market activity shows rising interest in proven hybrid builds, with offers from yards addressing long-range capability, including libya and other Mediterranean routes. The address of fuel strategy, spare parts, and crew training should be set early to maximize efficiency and safety on long voyages. palumbo and giordano input in hull and interior design continually address stability and guest comfort, while commercial operators look for double redundancy and steady performance across sea states.

Electrical Systems, HVAC & Redundancy

Install an N+1 power strategy: two 2.4 MW main gensets with automatic transfer switches and a dedicated 1.0–1.2 MW emergency generator. Route all critical loads–bridge, nav, communications, lighting, and HVAC–through a dual-bus switchboard with independent feeders. Keep fuel, oil, and starter systems separated into fire-rated compartments and verify fuel storage endurance for 24 hours at sea and 48 hours at dock. Coordinate with shipyardthe and tagliavini for layout and with lauderdale operations to align on fit-out in the schedule. Provide a clear format for cable schedules and diagrams to the project team and ensure documentation follows the format requested by the client.

HVAC design uses a modular chilled-water plant: two primary chillers (1.2–1.8 MW each) plus a standby unit, with two primary pumps and a standby pump to support separation of propulsion and guest areas. Zone-control deploys AHUs per deck with VFDs on fans and pumps; include heat recovery on exhaust air and dedicated make-up air for kitchens and gyms. Glazingthe windows with double-glazed, low-E units reduces solar load; target a U-value of 0.9 W/m2K or better. Select materials for insulation with moisture resistance and fire rating, and run copper cables rated 105°C in properly sized trays routed away from propane and fuel lines. Place condensers away from occupied spaces to minimize noise and heat transfer, factoring in the drizzle typical of lauderdale to ensure reliability during storms and routine port calls.

Redundancy and maintenance rely on edgeaera remote monitoring for power and HVAC subsystems, with alarms and live data feeds to the crew. Involve an expert panel including enrico and vries to review brands choices and to validate double-supply paths for critical rooms such as the staterooms and the bridge. Double-check HV zone isolation, cable tray routing, and fire-rated partitions to prevent cascading faults. Schedule annual 100% load testing of gensets, ATS, and MCCs, plus quarterly functional checks of pumps and AHUs; document results for later audits and upgrade planning. Prepare a dedicated maintenance window to test the emergency shutdowns and post-test run-downs with the crew, ensuring the team gains hands-on experience before opening up to guests.

Collaboration and documentation flow through a defined contact list and a single source of truth. Involve tagliavini and edges of the engineering team early to align on stateroom power budgets and lighting formats, while keeping the liaison with lauderda le and shipyardthe visible in the project format. Provide advice on room-by-room power budgets for the staterooms, dining area, and outdoor spaces, and ensure the final layout includes a clear format, with names such as Enrico and the expert panel cited for final approval. After installation, compile a compact handover package including materials, size, and glazingthe specifications, and set out a later commissioning plan that aligns with the ship’s operational schedule.

Guest & Crew Accommodations, Layout & Access

Install a dedicated guest access corridor from the foyer to the main deck salon with an independent service core for crew. This close separation protects privacy while enabling rapid service across all facilities.

• Guest accommodations: 12 guests in six cabins on the main deck, plus a full-beam owner suite on the bridge deck and a VIP cabin nearby. Each cabin features ensuite facilities, ample storage, and climate control for comfort during crossing.
• Public areas and cabins flow: glazingthe panels provide panoramic light in the main salon; dining area connects to terraces for al fresco meals when weather allows. The kitchen is adjacent to the galley with dual access from guest and crew zones to streamline service.
• Facilities for guests: spa, cinema, and a small gym are located near the guest corridor; exterior decks offer shaded lounges and sun pads.

• Crew accommodations: 26–32 crew across 14–16 cabins on the lower deck, with a dedicated crew mess, gym, and medical provisions as needed. A separate crew entrance and service stairs keep workspaces efficient and reduce cross-traffic with guests.
• Access and circulation: a central vertical core with two lifts and multiple stairs ensures quick service from the kitchen to dining and from crew spaces to the bridge. Exterior decks include a service deck and tender area with secure access from the stern crew zone.

Design and build notes: the interior is designed by franchini with umberto at the helm, blending zenit lighting and aera finishes. Glazingthe windows on the owner and main deck create a luminous ambiance while preserving privacy. The shipyardthe team coordinates with the brand and projects to ensure high-quality facilities with robust backing for maintenance. ownershipthe framework guides privacy protocols while supporting flexible charter and membership options. The layout was successfully tested in sea trials and tidal conditions to confirm safe, comfortable access at all speeds.

Custom Pi Features: Materials, Finishes & Deck Spaces

Choose teak-core exterior decks with a micro-textured anti-slip finish and a UV-cured topcoat. This setup delivers grip in wet conditions, minimizes maintenance, and aligns with Tagliavini-inspired aesthetics visible in the Pi’s transitions from deck to salon. It is currently listed among the three top Pi configurations offered by vesselbrand partners and supported by the yard’s logistics network.

Materials drive performance across three primary streams: teak for exterior warmth and traction; carbon fiber composites for balance and weight savings; and marine-grade aluminum for durability and corrosion resistance. Otams sealants boost moisture resistance, while aera-grade adhesives ensure long-term stability. They help maintain cabin comfort and support shipping logistics across shipyards, improving overall reliability of the structure. The three-material approach also reinforces stability in rough seas, which is crucial for peak passenger comfort during long passages. cabinsthe layout ties guest access to exterior decks, and membership in a supplier network helps keep the material spec consistent across listed components.

Finishes balance beauty with endurance. Matte varnish on exterior wood elements reduces glare while preserving depth of tone; satin lacquer on interior woods resists fingerprints and salt spray; and a ceramic-based anti-stain topcoat protects high-traffic surfaces. Tagliavini finishes are tuned to create seamless light interaction between indoor and outdoor areas. The three finish families are designed to be swapped in future refits without major structural changes, enabling the owner to refresh the vessel without downtime. Currently, the Pi program supports these finish options through a dedicated initiative that coordinates boatyard membership and service.

Deck spaces allocate three functional zones with precise area planning. The estimated exterior deck area totals about 1,040 m2, with aaft dining terraces, sun loungers, and a pool cluster forming the core aesthetic. The cabinsthe arrangement places access routes and service corridors alongside the guest terraces to maximize flow and minimize congestion. They also allow three guest cabins to benefit from direct deck access in peak use scenarios, improving everyday usability and guest satisfaction.