xMercury is building an 800-horsepower engine for a market that has lost roughly 80,000 buyers a year since 2021. The arms race is a mix strategy, and mix strategies come with a clock on them.
Marine engine makers keep raising horsepower because the industry has stopped growing in units. US new powerboat retail sales fell from about 300,000 in 2021 to about 220,000 in 2025. Selling bigger, costlier product to a narrower group of wealthy buyers holds revenue up while volume drains out. Brunswick’s Mercury Marine has the strongest position in that trade because it is the only company making 600-hp outboards, and every hull builder has to buy from someone.
A Florida street-sweeping executive bolted four Mercury outboards to the back of a 53-foot Scout, paid $2.9 million, and can now reach tuna grounds 100 miles offshore at 70 mph. That is 2,400 horsepower hanging off a transom. Ten years ago no recreational outboard came close.
Read the trade data underneath that boat and a different picture shows up. Fewer Americans buy new boats each year than at any point since the pandemic surge, and the decline has run for four straight years.
What Happened
The Wall Street Journal reported this week that outboard motors have become the propulsion of choice for high-end boats, with builders stacking them in pairs and quads to hit speeds once reserved for much smaller craft. High-horsepower outboards now span 200 hp to 600 hp and cost between $20,000 and more than $70,000 each.
Mercury Marine, a division of Brunswick, is the only manufacturer producing a 600-hp outboard. The engine carries 12 cylinders, stands over seven feet tall and weighs 1,260 pounds. Mercury has an 800-hp prototype running and expects a production version within two years.
Yamaha tops out at 450 hp and points to reliability as its priority. Honda Marine stops at 350 hp and sells fuel economy to charter captains who run 100 miles offshore and back with paying customers aboard.
The Backstory
The horsepower ceiling climbed for a specific engineering reason. Twenty years ago, big boats used inboard engines mounted inside the hull, which produced more power than any outboard could match but ate cabin space and made servicing miserable. Outboards maxed out at 300 hp. Mercury swapped metal parts for composites and polymers and developed aluminum alloys that held strength at lower weight, which let the company add power without wrecking the boat’s balance.
The commercial reason arrived later, and it is the one the Journal skips.
US new powerboat retail unit sales, personal watercraft included, hit roughly 300,000 in 2021. The National Marine Manufacturers Association then recorded 258,000 units in 2023, 238,117 in 2024, and an estimated 215,000 to 225,000 in 2025. NMMA expects 2026 to land flat or a shade above last year. Four consecutive down years have taken about a quarter of the market’s annual buyers off the board.
Brunswick felt it directly. Propulsion segment net sales dropped from $2.41 billion in 2023 to $1.81 billion in 2024, and segment operating earnings fell from $494.7 million to $242.6 million. Half the profit in the engine business vanished in twelve months.
The Plan
Raise the price of every unit you still sell.
Raymond James analyst Joe Altobello told the Journal that marine companies have trained their attention on upscale buyers whose stock portfolios have given them room to spend. That is the whole strategy stated plainly. Boat builders answered the power increase by making vessels larger. Viking Yacht is designing a 65-foot Valhalla, ten feet beyond its current flagship. One owner already runs a $3.8 million 55-footer on four 600s and treats the Fort Lauderdale to Bimini crossing as a lunch trip.
It is working for now. Brunswick posted first-quarter 2026 net sales of $1.4 billion, up 13%, with adjusted EPS of $0.70, a 25% gain. Propulsion revenue rose 17% to $571.3 million. Mercury took 60% outboard share at the Miami International Boat Show.
The Business Model Angle
Mercury occupies the best seat in marine, and horsepower is how it defends the seat.
Scout, Valhalla, Aquila and the rest are fiberglass assemblers competing on cabin volume, swim platform width and dealer relationships. None of them builds engines. All of them need engines. Mercury sells to boat brands that Brunswick’s own Boat segment competes against, which makes it an arms dealer collecting on both sides of a fight. Being the only supplier above 450 hp turns a commodity component into a spec that hull designers build around.
That is a mix play, and it belongs to the same family as Ferrari using a manual gearbox to beat its growth targets rather than selling more cars. Higher-margin versions of what you already make cost less to launch than new volume, and they hold pricing better.
Two problems sit inside the marine version.
The first is arithmetic. More power per engine means fewer engines per boat. Aquila Power Catamarans dropped from four motors to two on some models and gained a wider swim platform for the trouble. Every builder that makes the same swap cuts Mercury’s unit count while raising its average selling price. Foulkes has to make price and mix outrun that, in a market where total units keep falling.
The second is that horsepower ages badly as a moat. BMA covered this pattern when BYD’s Denza brand undercut the Porsche 911 on both power and price, because performance numbers get matched once a rival decides to spend. Yamaha and Honda have chosen not to spend. Yamaha sells durability. Honda sells fuel bills to captains who calculate payback on every trip. Those are positions, not concessions, and they aim at buyers who will still exist when the stock market cools.
The Risk
Harley-Davidson ran this exact playbook. Volume shrank, so the company sold heavier and more expensive bikes to older and richer riders, watched median buyer age climb past 50, and let the entry pipeline dry out.
Marine’s exposure looks similar on paper. NMMA reports that 61% of boat owners earn $100,000 a year or less, that 95% of boats on US water measure under 26 feet, and that entry-level categories account for more than 90% of retail unit activity. The engineering budget and the press coverage both point at the other end.
Three counterweights make the marine case stronger than Harley’s, and they deserve real weight.
Participation is holding. About 85 million Americans go boating each year, and pre-owned sales run near 80% of annual unit volume, which keeps people on the water without a new-boat purchase. Brunswick has also built an on-ramp Harley never managed, with Freedom Boat Club converting access into recurring revenue instead of ownership. Spending on boat use and aftermarket accessories stayed flat at $12.1 billion and $12.4 billion in 2024, so the installed base keeps paying.
The tariff line is the nearer risk. Propulsion adjusted operating margin fell 210 basis points to 7.4% in the first quarter of 2026 as import costs bit. Mercury is spending on five outboard development programs at the same time. Higher horsepower costs more to engineer, and the buyers who fund it are the ones most exposed to a market drawdown.
Quick Questions
Is Mercury the only company that makes a 600-hp outboard? Yes. Yamaha’s largest is 450 hp and Honda’s is 350 hp. Mercury has an 800-hp prototype and expects a production version inside two years.
How much does a high-horsepower outboard cost? Between $20,000 and more than $70,000 per motor, covering the 200 hp to 600 hp range. A quad installation of the largest engines runs past $280,000 before the boat.
Are boat sales falling? Yes, in units. US new powerboat retail sales dropped from roughly 300,000 in 2021 to an estimated 215,000 to 225,000 in 2025. NMMA expects 2026 to come in flat to slightly higher.
Why do builders want fewer, bigger engines? Space and cost. Aquila switched from four motors to two on some catamarans and widened the swim platform between them. Fewer rigging points also cut installation complexity.
The Business Model Analyst Take
Every maturing market reaches the moment when growth stops arriving in units and starts arriving in mix. Marine hit that moment in 2022 and the 600-hp outboard is what the response looks like from the outside.
Mix works. It protects margin, it costs less than chasing volume, and it hands the supplier with the highest spec a position no competitor can copy in a season. Domino’s proved that a cash machine can keep minting when growth disappears. Mercury is running the same trade with better structural cover, because it sells the one part nobody else can build.
The catch is that mix strategies borrow from the future. Each year you sell fewer, pricier units to a smaller and wealthier group, you shrink the pool that produces next decade’s buyers. Harley learned the cost of that arithmetic across two decades. Brunswick knows it too, which is why Freedom Boat Club and the aftermarket business matter more to the long-term story than the 800-hp headline will.
If you operate a business where unit demand has flattened, take the useful half of this and leave the rest. Push price and mix, because that is where near-term margin lives. Fund the entry-level on-ramp with the proceeds, because that is where the next cycle’s customers come from. Companies that do the first and skip the second end up with a beautiful flagship and a median customer who is aging out.
