17
1
John Willis11 Oct 2024
REVIEW

Cobalt R8 Surf 2024 review

Surf’s up with this whopping high-tech wake boat that’s also adept at cruising or high-speed thrills

Cobalt's latest R8 surf boat is big and bold, sporty and chic, and features a hint of Malibu design following Malibu Boats' acquisition of Cobalt in 2017

Australians have always enjoyed a love of surfing and boating. In fact, way back in the 1960s, Australian surfing legend Midget Farrelly won the inaugural World Surfing Championship at Bondi Beach heralding a new breed of professionalism and aquatic lifestyle.

Of course, surfing was an ancient ‘sport of kings’ in Hawaii which developed in the American mainland after the islands joined the union in 1959, becoming the 50th state. California’s Malibu Beach then became the epicentre of the surfing revolution giving rise to favourites like the Gidget movies and TV show, and music exemplified by the likes of The Beach Boys, Jan and Dean, Dick Dale, The Atlantics and the Shadows.

During the same era, fibreglass became the new material of choice for both boat and surfboard production, with Cobalt Boats establishing themselves in (of all places) Kansas, smack bang in the middle of the country. Cobalt Boats was formed on the conviction of being “built on a reputation of quality instead of price”.

2024 cobalt r8 15

Cobalt Boats successfully targeted the expanding ‘high-end speedboat’ market, setting standards in quality, style, design and performance. Cobalt has since developed the range to include surf, outboard, and sterndrive models as well as larger family cruisers.

In 2017, Cobalt Boats was acquired by surf, wake and ski boat giant Malibu Boats, which brings us to its latest R8 Surf model.

I must say I felt a little like Dorothy in the Wizard of Oz when she realised she must be “somewhere over the rainbow” as the big bowrider arrived at the boat ramp. I just couldn’t help thinking to myself of the famous saying: “Toto, I have a feeling we're not in Kansas anymore!” 

Hull and engineering

This is a big and bold boat featuring a high-profile hull with a very sporty, yet chic demeanour. The combination of a Volvo Penta 6.2-litre 430 V8 with its twin forward-facing counter-rotating propellers certainly makes a statement about just how serious Cobalt is about producing ultimate on-water performance.

With an overall length of 8.48m, including the swim platform and an oversize 2.59m beam, it falls into the over-dimensional towing classification but makes a great candidate for stack storage or perhaps a dry lift or wet berth.

2024 cobalt r8 11

The internal volume, layout, ergonomic design and facilities make the R8 ideal for water sports, cruising or high-speed thrills.

The enlarged trim plate and ensuing trim range combine with the custom-designed, surf-oriented deep-V hull for a compliant ride, whether at speed or digging in the stern to produce a peaking wake for riding. The shape of the wake is customised with six ballast tanks (total capacity: 1043L) with trim tabs and Malibu ‘Surf Gate’ technology.

The wake is easily reshaped from the driver's position. It features cruise control and even auto-saved rider pre-sets. Surf gates on both sides cater to natural and goofy footers. 

The Cobalt patented ‘Swim Step’ lowers below the water line from the large swim platform at the stern. The forward drive maximises boarding safety with the props facing the bow.

Helm and console

There’s a bolster style helm seat, with all the onboard instruments and functions within easy reach. Our test unit featured twin Garmin 10-inch multi-function touchscreens, and the menu structure is user-friendly – even for those of us born around the time of Cobalt’s original conception!

2024 cobalt r8 04

Design and layout

The Cobalt R8 Surf has a traditional layout. Its centre-opening stainless-steel-rimmed windscreen has excellent wind deflection and easy access to the plush bow area. There’s a plug-in table and an abundance of cup holders throughout the interior. 

Back in the cockpit, the passenger seat has a flip-over backrest to accommodate forward vision or a comfortable north-south lounge for spotting and socialising. The size of the comfortable enclosed head is huge, with easy doorway access beneath the passenger dashboard.

2024 cobalt r8 07
2024 cobalt r8 06

The port-side lounge also extends in an L-shape at the transom to form a rear lounge. It features another flip-over backrest onto the rear sundeck and a unique choice of three positions – face forward, face aft and full down – to extend sun pad space. The rear sun pad is called the ‘rumble seat’ as it adjusts to two positions for sun baking and lounging. 

The rear lounge is based on a very convenient lift-up engine box, exposing the engine bay for easy servicing. Cobalt offers engine options from 350 to 430hp.

Features

The rear platform is accessed via a starboard walkway, and there’s another side lounge behind the driver’s helm.

While Cobalt has always provided exceptional trim quality, the R8 is now also showing just a hint of Malibu design and texture. The upholstery, including the side trims, has thick cushioning with a colour range of marine synthetics featuring heat-reducing French stitching and Fresco Chil Vinyl. It is also anti-bacterial, anti-fungal and mildew- and stain-resistant.

There are storage, removable cooler and wet box options underneath the seats and floor, with ‘Sof-Trac’ flooring throughout.

Overhead, our R8 was fitted with an electric-folding CNC-machined targa arch, one of the five options available. It provided not only a tow point and structure for the bimini and optional soft awnings, but also neon lighting, wakeboard storage and a high mount for four Harmon Kardon tower speakers mated to a platinum sound system.

2024 cobalt r8 08
2024 cobalt r8 03

On the water

While speed really isn’t a major wake boat criterion, the R8 does provide versatility. With a little negative trim, she bounces quickly with very little bow rise and is on a plane at 3200rpm with a cruising speed of 19.4 knots (36km/h). Unfortunately, fuel flow was unavailable.

The hull transitions predictably throughout the rev range to 25.2 knots (46.7km/h) at 4000rpm, and the V8 really starts to get into a groove at 33.8 knots (62.6km/h) at 5000rpm.

With a light load and two on board, we achieved Wide Open Throttle (WOT) at 5850rpm and 41.8 knots (77.4km/h).

If speed is your thing, I am sure the R8 Surf could be re-propped to achieve more top end, but that’s not the point of this combination. Instead, it’s built for carrying large passenger and ballast loads, pushing plenty of water and towing skiers/surfers etc.

2024 cobalt r8 14

Performance

REVS
SPEED
2500
9.1kt (16.9km/h)
3000
13.2kt (24.4kmh)
3500
19.4kt (35.9km/h)
4000
25.2kt (46.7km/h)
4500
29.7kt (55km/h)
5000
33.8kt (62.6km/h) 
5500
37kt (68.5km/h)
5850
41.8kt (77.4km/h)

Light load, two passengers, fuel consumption not available.

Verdict

The R8 Surf is a responsive and manoeuvrable package with a very solid Kevlar-reinforced synthetic hull and floor. It has power to please, an adjustable wake, comfortable layout, plenty of creature comforts and a solid construction that will stand the test of time.

Cobalt has backed the R8 with a 10-, five- and three-year warranty structure.

Specifications

Model: Cobalt R8 Surf

Hull length: 8.48m

Beam: 2.59m

Hull weight: 3039kg (approx.)

Maximum power: 430hp 

Engine as tested: Volvo Penta 6.2-litre 430 V8 with forward drive

Fuel: 303L

Passengers: Yacht certified

Priced from: $468,784

Price as tested: $623,060

Supplied by: JSW Powersports – jswpowersports.com.au

Share this article
Written byJohn Willis
See all articles
Pros
  • A huge wake boat that offers so much more
  • Premium presentation with historic DNA
  • Exceptional flow and comfort throughout
Cons
  • Forward drive adds performance but more accessible to damage
  • It’s a lot of money, but it’s a lot of premium boat
Stay up to dateBecome a boatsales member and get the latest news, reviews and advice straight to your inbox.
Subscribe today
Disclaimer
Please see our Editorial Guidelines & Code of Ethics (including for more information about sponsored content and paid events). The information published on this website is of a general nature only and doesn’t consider your particular circumstances or needs.
Love every move.
Buy it. Sell it.Love it.
®
Download the boatsales app
    AppStoreDownloadGooglePlayDownload
    App Store and the Apple logo are trademarks of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.
    © carsales.com.au Pty Ltd 1999-2025
    In the spirit of reconciliation we acknowledge the Traditional Custodians of Country throughout Australia and their connections to land, sea and community. We pay our respect to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.