48' Custom Planing Power Cat

A Roger Hill Masterpiece

Designed by renowned multihull naval architect Roger Hill and custom-built in New Zealand, this 22,000 lb, 48-foot planing power catamaran delivers an uncompromising balance of performance, classic styling, and unmatched fuel efficiency.  Constructed to the highest modern standards utilizing a high-strength, lightweight composite of carbon fiber, high-density foam, and E-glass, Sea Star features an advanced hull design that ensures a fast, stable, and a remarkably smooth ride.

For her first 16 years, this vessel was lightly used by her original owners in the Chesapeake Bay. Over the past three years, her current owner has enjoyed her exclusively for winter cruising in the Bahamas, keeping her safely dry-stored in Florida during the summer months. Throughout her entire life, she has always been meticulously maintained.

This is a rare opportunity to acquire a unique, highly capable, intelligently designed, and impeccably kept yacht that is turn-key and ready for her next adventure.

Performance & Efficiency

This power cat redefines economical cruising, consuming 50% less fuel than a comparably sized monohull without sacrificing speed, stability, or volume.

• Cruising Speed: Effortlessly cruises at 22 knots, top speed 30 kts.

• Fuel Burn: Burns 21 GPH at 22 kt cruise.  Impressive for a vessel of this size.

• Range: Cruising range of over 500 nautical miles.

Layout & Accommodations

The spacious, highly livable interior is intelligently arranged to maximize volume, privacy, and natural light.

• Staterooms: Two beautifully appointed staterooms and heads offer premium comfort for owners and guests.

• Helms: Two helms provide comfortable piloting in any kind of weather.

• Galley: Fully equipped galley intelligently situated in the starboard hull to keep the main deck open for entertaining.

• Flybridge: Seamlessly integrated into the vessel's architecture, the flybridge provides elevated, commanding vantage points without disrupting her sleek, classic profile.

Premium Upgrades & Highlights

• Engines: Twin Yanmar 480hp 6LY3-ETP diesels (Fully Serviced – only 1,410 hours)

• Generator: Phasor 10.5 KW (NEW 2025 – 49 hours)

• Bow Thruster: Sleipner SE170/250 (NEW 2025)

• Davits: Electric Dinghy Davits (NEW 2024)

• Electronics: Complete Simrad suite including MFDs, Radar, AIS, Wind, Depth, and VHF (NEW 2024)

• Climate Control: (3) Reverse Cycle Marine Air Conditioning units

• House Batteries: Massive AGM House Bank (1,150AH – NEW 2024)

• Tender: Highfield 11' RIB with a 20HP Tohatsu outboard (NEW 2024)

• Connectivity: Starlink integrated for fast, reliable offshore internet access

See Full Specs for Full Details Below:

Interior Features and Layout:

• Large saloon, galley down in starboard hull.  Galley is open overhead to the salon

• Ventilation systems that funnels air through the forward cowl into the salon

• Maple interior

• Opening wing windows forward Port and Starboard saloon. Opening aft saloon window

• Gloss teak and ash sole at entry and galley 

• Custom high end bound carpet throughout. 

• Large maple high gloss saloon table w/ cover

• 1 saloon air conditioning unit and 1 A/C unit for each stateroom (3 total)

• Sentry/Headhunter fuel/water/holding level indicator lights

• Centerline raised lower helm with full electronics and thruster controls (excellent visibility)

• 12V/ 110V Panel incorporated into lower helm seating pedestal

Staterooms:

• Master stateroom is island queen with custom mattress mounted athwartships, air conditioned

• Large private head midship, stall shower, Tecma 12V head, and hanging lockers and drawers

• Guest cabin forward in starboard hull with two opposing berths, both with custom mattress, air conditioned

• Guest head/day head is aft of the guest cabin with large shower area and Tecma 12V head

• Guest cabin has full height hanging lockers, many drawers and lockers

Galley:

• Isotherm 12V stainless drawer style refrigeration (NEW 2024)

• Custom 12V deep freezer w/ two access areas from the galley or cockpit

• 4 burner propane w/  oven and hinged glass top for additional work area 

• Matrix gas detector

• Double stainless steel sinks with filtered water faucet

• Microwave

• Galley opening port

• Magma BBQ mounted in custom compartment in aft cockpit

Flybridge features and foredeck

• Flybridge helm station on center with double bench seat 

• Complete cushions 

• Aft bench seat and built-in forward seating with storage lockers

• Fiberglass T-top shade for the double helm seat w/ Solar panel

• Simrad plotter, Simrad auto pilot, VHF (2024)

• Yanmar digital displays (NEW 2026)

• Rain water catchment system

• Windlass remote 

• Bow thruster control

• Full bow rail with bow seats

• 3 watertight bow deck lockers for large fender storage

• Windlass and anchor package

• Sunscreens for side saloon windows and windshield (2024)

• Rocna plow anchor w/ chain rode 

Cockpit/Swimdeck

• Huge open cockpit for deck chairs

• 48" swim deck with rails

• Electric dinghy davits with custom matching Awlgrip (NEW 2024)

• Heavy duty swim ladder (NEW 2024)

• Solid teak decking in cockpit and swim deck

• Slide away transom door

• Magna mounted grille in cockpit locker

• Cockpit Isotherm refrigerator

• Gas shock assisted large engine hatches

• Cockpit shower at transom door

• Built in teak stern bench seat

• Folding teak chairs and tables (currently stored in starboard engine room)

• Sunshade from flybridge to transom

Electronics:

• Simrad VHF with AIS and command mic (NEW 2024)

• (4) Simrad multi instrument display (NEW 2024)

• (2) 12" Simrad MFD's at lower helm (NEW 2024)

• (1) 12" Simrad MFD at upper helm (NEW 2024)

• Simrad Radar (NEW 2024)

• Simrad AP26 auto pilot

• Simrad wind speed/direction (NEW 2024)

• Helm auto anchor control for windlass AA550RC

• Starlink mounted on tower (NEW 2024)

• Fusion stereo w/ speakers throughout (NEW 2024)

Electrical:

• Phasor 10.5KW generator in sound box mounted aft of the port engine (49 hrs- NEW 2025)

• Dual 30 amp 125V shore power with cords

• Galvanic Isolator

• Battery isolator cut-off switches for main engines, generator and house

• Electronic engine controls with manual back-up

• 1,150AH house bank of AGM batteries (NEW 2024)

• All new starting batteries (NEW 2025)

• Mastervolt 12/2000w inverter 

• Mastervolt battery charger

• Touch pad windshield wiper controls

• 150W Solar Panel mounted on T-top for maintaining batteries while on a mooring

Mechanical

• Twin Yanmar 480hp inboard V-drive diesels model 6LY3-ETP (1,410 hours)

• 1,000 hour Yanmar service (Completed in 2023)

• Mechanical maintenance completed annually

• Phasor 10.5KW Generator (NEW 2025- 49 hours)

• Oil change system for transmissions and Yanmar engines

• Sea Fire auto fire extinguisher system

• Racor fuel filters

• Fiberglass fuel tanks mounted low and forward on engines (500 gallons)

• Aft bilge pumps with high water alarms

• 5-blade bronze propellers

• Sound down engine room insulation

• All Yanmar recommended service is up to date including all coolers, fuel lines, valve adjustments and routine service

Additional Equipment and Information:

• Bottom painted in 2025
• Hyfield 11'  Rib and 20HP Tohatsu Outboard (Both NEW 2024)

Performance and range

Sea Star will cruise at 22.3 knots burning 21 gph producing a range of over 500 miles.  Max speed is 31 knots. If driven at trawler speed, the range can be greatly increased. 

Light weight efficiency and high speed

The American client for this project has built several power cats to our design, planing and semi displacement. The 14.6m planing cat will be used as a fast day trip and weekender in a reasonably sheltered inland waterway and also for longer summer holiday cruising up the coast.

The design brief emphasis was on speed and stylish good looks and a layout that we had used before in a slightly smaller project for the same client, the galley ‘down’ being the most unique feature compared to other similar catamaran and mono hull vessels.

A foil was discussed to optimize the performance but discounted due to the large number of pot floats and floating obstructions in the areas of predominant use. This lead us back to our standard planing hull shape with a little more attention to the fwd chine geometry and bottom area aft of the fwd sections where these boats can have a tendency to be a bit hard riding when bouncing along in a short chop, particularly at the speeds this cat is intended to operate at.

Weight saving was prominent in the design and build process and the pre laminated, pre cut composite panel construction system optimizes the strength and weight of the structure complimented by the judicial use of carbon laminates throughout the structure of the vessel.

The twin 480 hp electronic diesels fit well into this size vessel and give a top speed in the low 30's and a very comfortable and economic cruising speed in the 20 to 25 knot range. Fuel consumption is approx. half that of a comparable size mono hull at similar speeds.

The boat was constructed in Auckland from a composite kit set supplied by ATL Composites in Australia and is fully compliant with ABYC standards. 

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.