Boating New Zealand Boat Reviews
Reviews
Boating New Zealand News
News
Boating New Zealand Sports
Sport
Boating New Zealand Lifestyle
Lifestyle
advertise
Boating New Zealand Boat Reviews
Reviews
Boating New Zealand News
News
Boating New Zealand Sports
Sport
Boating New Zealand Lifestyle
Lifestyle
BOAT-REVIEWS-MOBILE
Boat Reviews
BOAT-NEWS-MOBILE
News
BOAT-SPORTS-MOBILE
Sports
BOAT-LIFESTYLE-MOBILE
Lifestyle
Home2025August 2025Formula 4000 restoration: Total reform

Formula 4000 restoration: Total reform

Published
Photos and media by
Roger Mills

The immaculate Formula 4000 slid slowly past me down the fairway, stopped, spun neatly on the spot and backed into its Gulf Harbour berth. “That’s a minter,” I thought, “there’s gotta be a story there.” Turns out there was.

Bookmark post
Bookmarked
Bookmark post
Bookmarked

The Formula 4000 is a 40-year-old design by Jim Young, built and marketed by his brother Alan as a classy, high-performance launch. Alan Young Boats built around 50 of them between 1984 and 1987.

It turns out this particular example was built to MOT survey with a High Modulus specified layup of foam sandwich Divinycell and Kevlar reinforcement. Her original owner had a property on Waiheke Island and wanted to get there at 27 knots. Having experienced gearbox issues on his previous boat, he tried to eliminate shafts and gearboxes, so the then-named Spirit of Cowes was fitted with twin Ford Sabre 300hp turbocharged diesel engines, driving Hamilton 291 jet units.

At the wheel

This was an unusual drivetrain combination at the time; however, besides high-speed performance advantages, the jets provided considerably less draft. A subsequent owner replaced the jet units with traditional shaft drives and rudders while retaining the Ford engines.

- Advertisement, article continues below -

Like many launches built in the 1980s, the Spirit of Cowes had deteriorated cosmetically over time, and by 2021, she was looking decidedly run-down. It was in this condition that Braden Weber of Weber Marine discovered her and decided this would be his next restoration project.

Although better known for building new Elite launches, Weber enjoys having a restoration project underway, which helps keep his staff fully employed during quiet periods. His key principle when buying suitable projects is sticking to popular, well-respected Kiwi boats, as they usually have good bones.

At the dock

The Formula 4000 was pulled out and completely stripped, which is a far bigger job than many might appreciate. Essentially, the entire launch was gutted of engines, gearboxes, hydraulic steering, plumbing, tanks, wiring, upholstery, and most of the cabinetry.

Once stripped, a careful examination revealed that the launch’s structure remained in perfect condition, and no further strengthening was required.

Unlike some 4000s, there was no delamination in the foam core bottom sections. Unquestionably, the then-MOT requirement that the bulkheads be fully glassed to the interior has helped maintain the structural integrity.

- Advertisement, article continues below -
The Formula 4000 hull shape is an easily driven one

In 1980, the Formula 4000 was available with a choice of four layouts, and Spirit of Cowes was fitted with the most popular one.

This option features a twin-berth forward cabin and the owner’s double cabin aft to port. This cabin has an adjacent ensuite, which can also be accessed from the passageway. There is a second, smaller head compartment located aft on the starboard side, and just forward of this are a pair of open bunks.

Weber retained the original layout, which avoided the need to modify the bulkheads. However, almost all the cabinetry has been replaced, along with new interior linings. The galley unit and benchtop are both new, as are the wiring, plumbing, tanks, lighting, and electrical systems. 

Speaking of electrics, these have all been centralised and relocated to an impressive switchboard just inside the main cabin to starboard, allowing the entire boat to be electrically controlled from one position.

As per modern thinking, there is a strong reliance on electrical power, including an all-electric galley. Besides the three engine alternators, Weber has installed an Onan generator. The dehumidifier and air conditioning can be powered from this or, when in the marina, from the 240V mains supply. 

- Advertisement, article continues below -
Parker Marine Brokers Logo
1988 Markline 1100
1988 Markline 1100
$140,000
1988 | 12.5 | Ashleigh Paige is a nice example of these boats, powered by twin 200hp Volvo diesels and capable of handling New Zealand’s coastal waters.

The main cabin has a dining area on the port side, with the galley situated aft. To starboard, the original lower steering station was removed and replaced with a drinks cabinet. 

The original windows have been retained; in fact, they weren’t even removed, which meant a significant time saving. Likewise, the alloy window mullions were also retained, although they were refinished.

The aluminum door and window separating the cockpit and main cabin are new, and Weber took the opportunity to make these vertical instead of the half-kinked original. The aft window can be opened horizontally to fit up against the flybridge roof, providing a spacious indoor-outdoor flow between the cabin and cockpit when the door is open and locked back. A fridge and a Weber BBQ have been fitted seamlessly into the cockpit area; the latter is operated from the boarding platform, which keeps the cook facing forward.

Speaking of the boarding platform, Weber added 500mm to the hull under the platform, which was, according to him, about as much as the hull could take without adding too much buoyancy aft and adversely affecting the trim.

The flybridge is accessed through a ladder to port and has been completely remodelled to now feature a solid GRP hardtop. Up here, the sole driving station is aft, with wrap-around seating forward, which allows the helmsperson to communicate easily with guests. A fridge has been incorporated into the wrap-around seating. The front windows are fixed armour glass, with roll-up plastic clears around the other three sides of the flybridge and there’s 1.8m headroom throughout.

Downstairs, in the power department, the elderly Fords were replaced by a pair of 300hp Volvo D6 engines, which are turbocharged and aftercooled. Fitted with ZF68 gearboxes, the engines drive reprofiled, four-bladed propellers through the original shafts and struts.

Given the hull’s shallow deadrise of 12 degrees, it’s unavoidable that the twin engines are mounted close together, and it’s a snug fit between them. However, with the cabin floorboards removed, access to the service points from the top is relatively easy, and there is plenty of room at either end. The twin rudders have been retained and upgraded with new hydraulic steering and an integrated autopilot. The final stage in the restoration was a name change to Reformed, which seems very appropriate.

Reformed at speed showing her fine entry

On the water

With the twin Volvos barely off idle, manoeuvring Reformed from her Gulf Harbour berth and out into the fairway was a doddle. There is a substantial bow thruster, but there’s no need for it unless the breeze is up.

Once out into open water and with throttles pushed forward, Reformed lifted smoothly onto the plane and up to her usual cruising speed of 18 knots. At this speed, the engines are spinning at 2,600rpm, just where the torque begins to taper off. The hull has an efficient planing shape; as can be seen from the fuel burn chart, varying the engine revs from 2,000 to 3,300 only changes the litres per nautical mile consumption by 1.1 litres.

The enclosed flybridge offered an excellent vantage point for sightseeing, with generous seating and easy communication with the helmsperson. The engines were never intrusive, just the pleasant hum of a pair of straight-sixes content in their work. 

The best seat in the house

No question, the helmsperson has the best seat in the house – a superbly comfortable chair with full 360-degree visibility, chartplotter and fishfinder screens close at hand, and the engine, bow thruster, and anchoring controls within easy reach.

One notable feature among many is that the Volvo fly-by-wire engine controls offer the option to operate both engines from a single lever. This provides perfect engine revolutions synchronisation and requires only a single button to activate.

The Humphree Lightning trim and stabilisation system was highly impressive. While this system allows complete manual control, we left it in automatic mode for the entire test. In this mode, the system provides automatic stabilisation of the launch’s trim, list, pitch, roll, and turning performance, from idle to full throttle, and everything in between.

The Humphree system is sophisticated, yet in auto mode, it requires no input. A graphic bar graph of the two tabs on the display shows the system working, and it was amazing to see how quickly it responded, probably faster than a human, unless you’re an America’s Cup flight controller. Unquestionably, the days of the old trim tab flaps on the transom, with all their engineering and growth issues, are numbered.

The steering is well weighted, and while you can feel the 11 tonnes of boat beneath you, steering requires no effort. Close-quarters manoeuvring with the twin engines, despite them being so close together, was excellent, and Reformed could be spun 360 degrees in either direction on the spot. As previously mentioned, the bow thruster is not usually required; however, it serves as an excellent backup for breezy conditions. 

Weber had a big grin all day, and he’s obviously delighted with how this project’s worked out, as he should be.

“This is my third restoration project. I love the creative side. I could see this launch had great bones; it was just very tired. However, now that it’s finished, I am starting to look around for the next one.”

As many wives and partners will know, it’s tough to stop serial boatbuilders from moving on to their next project. It seems to be a case of ‘watch this space.’ 

The Volvo D6 engines are a snug fit

Summary

The Formula 4000 features a well-proven, seaworthy hull, and, apart from a minor extension, the hull remains unchanged. It remains just as at home on the briny as it has always been.

The new Volvo engines are an excellent match for this hull, ensuring reliability, smoothness, and quietness.

The launch’s beam and weight comfortably accommodate a full flybridge. Making this the sole driving station has paid off; removing the downstairs station has opened up the saloon accordingly and made it a better match to the number of berths. This, along with the other modifications mentioned, has transformed the interior.

Reformed at her usual cruise speed of 17 knots.

While the external styling – flybridge apart – hasn’t changed, removing the 1980s gunwale striping and other period detailing has modernised the exterior appearance, and one could be forgiven for mistaking the age of the design.

In short, Reformed has been transformed. 

SHARE:

Article
Article

Sea.AI protects whales

August 2025
Whales are essential to the health of our oceans, playing a critical role in carbon sequestration an...
Article
Article

Russell Boating Club opposes marina proposal

August 2025
Russell Boating Club members voted overwhelmingly at the AGM held on 15 June to oppose use of the Fa...
Article
Article

New rescue PWCs for Manukau

August 2025
The rescue watercraft are introduced as a response to an increase in incidents in the Harbour. The a...

Comments

This conversation is moderated by Boating New Zealand. Subscribe to view comments and join the conversation. Choose your plan →

This conversation is moderated by Boating New Zealand.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Cule Marine

The Cule brand (pronounced ‘cool’) was established in 2007 to offer New Zealand’s boat building industry the option of a premium-quality, locally manufactured boat hatch. No small feat when your comp...

Marsden Marine Services Ltd

Maritime New Zealand, Australasian Institute Marine SurveyorsCommercially Certified Marine Surveyor Qualified, Recognised, and Professionally Accredited Greg Marsden DipMarSvyAIMS-CCMS, MNZ P/ ...

LATEST NEWS

1972 Adams 45

The 1972 Adams 45 Hornpipe is a proven bluewater cruiser built for serious offshore and coastal adventures.

2005 Ganley Solution 43

The Ganley “Solution” can sail anywhere on our oceans. It has low mileage 72 HP Nissan diesel with 3:1 Borg Warner gear box French oller furler with lots of sails, anchors and batteries plus solar panel, GPS, and depth sounder.