Lagoon 450 Versions Decoded, 450F vs 450S, Specs and Prices

The Lagoon 450 and the decade it owned

Few cruising catamarans have shaped a market the way the Lagoon 450 did. It was introduced in 2010 and delivered from 2011 as the replacement for the Lagoon 440, a boat that had itself sold more than 400 units. Compared with the 440, the 450 was a big step: displacement rose from about 26,800 pounds to more than 33,000, upwind sail area grew to about 1,400 square feet, and the flybridge became the main steering position rather than an add-on.

By the time the last 450S left the factory in 2021, more than 850 had been built. For most of the 2010s, if you chartered a 45-foot catamaran in the BVI, the Grenadines, Croatia or Greece, there was a good chance it was a Lagoon 450. That is why the used market is full of them, and why buyers need to understand the differences between versions before comparing prices.

Original 450, 450F and 450S, a field guide

The original Lagoon 450 of 2011 is a full flybridge boat. The helm sits up top, reached by stairs from the cockpit. It offers great visibility over the boat and puts every control line at the skipper's fingertips, but it also isolates the helmsman from guests in the cockpit.

For model year 2017 Lagoon split the range in two. The flybridge boat carried on as the 450F, and alongside it came the 450S, the S standing for SporTop. The S moves the wheel to a mid-level station to starboard under a rigid bimini, between cockpit and coachroof. That let VPLP lower both the mast and the boom while keeping the same sail area, and it turned the coachroof into a sunbathing deck. The SporTop refresh also brought larger hull windows and a modified hull mold with a chine that widens the hulls above the waterline, adding volume and light in the cabins.

On brokerage sites the label 450F is often applied loosely to any flybridge 450, including the early boats built before the S existed. Check the build year, interior finish, engines and refit history rather than trusting the listing title.

• 2011 onward: original Lagoon 450, full flybridge helm
• Mid-2010s to 2019: the flybridge boat, marketed as the 450F once the S arrived
• Model year 2017 to 2021: 450S SporTop, mid-level helm, lower mast and boom, chined hull and bigger windows

Which helm suits you, flybridge or SporTop

The 450F suits crews who like to sail from a commanding position and want the social space on the flybridge. Visibility is excellent in open water, and the bridge becomes a second lounge at anchor. The trade-offs are real, though. The boom is high, which makes reefing, flaking and rig repairs harder, the steps up are steep and close to the winches, and the skipper cannot easily keep an eye on children in the cockpit.

The 450S is the better boat for most couples. The mid-level helm keeps the skipper in touch with the cockpit, the lower boom makes sail handling more manageable, and the lower profile cuts windage and pitching. You lose the flybridge lounge, but you gain a coachroof sun deck. Cruising World described the S as a worthy sibling rather than a true replacement, and that is fair: it is the same platform made friendlier.

For resale, both versions are liquid. Searches for a 2020 Lagoon 450S are common because those late boats combine every update with relatively low hours, and they tend to carry the highest prices in the 450 market.

Performance, a comfortable cruiser rather than a racer

Nobody calls the Lagoon 450 a performance catamaran, and owners who expect one will be disappointed. In normal cruising conditions it makes 6 to 7 knots upwind and better than 8 knots off the wind with a gennaker. It holds its own in a breeze, and the generous displacement gives it a steady, comfortable motion.

In a light-air test on the Chesapeake, a 450S managed over 4 knots hard on the wind in about 6 knots of true breeze and tacked through 90 degrees without trouble, which is respectable for a boat of this weight. Under power, the boat cruises at 5 to 6 knots on one engine and 8 to 9 knots on both at around 2,800 rpm. Standard engines are twin 45 hp Yanmar 4JH45s, with 57 hp versions available.

Living aboard a Lagoon 450

The interior was styled by Nauta Design in Alpi wood finishes, and it remains one of the reasons people choose this boat. The saloon has a U-shaped galley to port, a navigation station forward of the galley, and dining space that connects directly to the aft cockpit. Vertical coachroof windows give excellent headroom and visibility from inside.

The three cabin owner's version dedicates the starboard hull to a master suite with island bed, desk and large head. The four cabin charter version is far more common on the used market. If you want the owner's layout, expect to pay a premium and to wait for the right boat.

Tankage is good for a boat of this era: about 275 gallons of diesel, split between two tanks, and about 92 gallons of water as standard, with larger water options on many boats. A watermaker is still close to essential for long-term cruising with guests.

Known quirks and what a surveyor should focus on

Beyond the usual catamaran survey items, the area to focus on is structural bonding. A number of 450s on the brokerage market are now advertised with bulkheads that have been professionally inspected and reinforced, some with Lagoon certification, which tells you this became a known concern on the model. Ask whether that work has been done, by whom, and for the paperwork, and have the surveyor look closely at bulkhead tabbing, the forward sections of both hulls and the forward crossbeam area.

Owners commonly cite the high boom on the 450F, the risk of hitting your head on the flybridge bimini, steep stairs and sharp overhead locker edges in the galley. None are structural, but they matter if you sail with older crew or children. Ex-charter boats should be checked for worn saildrive seals, tired steering systems, hatch leaks and UV damage to canvas and trampolines.

Ownership costs and why prices have held so well

Annual ownership costs in the US typically run $38,000 to $75,000 excluding depreciation. At almost 26 feet of beam, a double slip is unavoidable, and insurance for a catamaran in hurricane zones remains expensive. Two 45 hp diesels, a generator and an air conditioning system are the main mechanical items, and parts are easy to find anywhere Lagoons charter.

The resale story is remarkable. Well-kept, privately owned 450S models from 2018 to 2020 still ask more than $500,000. Recorded sales have a median of roughly $525,000. The Lagoon 46 that replaced it in 2019 costs far more new, which keeps demand for good 450s strong among buyers who want the same space for less money.