Contents of Report
From the ergonomic elements of the helm station and the power aft bench, to the conveniences of the multi-use cabin and spacious social zones, it is clear that the Horizon 350 OB is designed for practicality and comfort while hosting friends and family underway for day boating experiences of all sorts. Her cabin provides a cozy sleeping space for her owners. In all ways, the boat is destined for people who understand the value of what is being offered in this package.
• Twin 350-hp Mercury Verados
• Fiberglas hardtops with canvas sunroof
• Joystick with Digital Throttle and Shift
• Swim platform with side wings for watersports
• Hugh Stowage space
• Well-designed seating
• Inside cabin
• Robust standard equipment list
The Horizon 350 OB comes standard with twin Mercury 350 XXL Verado JPO engines in black. The in-line, six-cylinder engine is supercharged with charge air-cooling and electronic boost pressure control and delivers 350 horsepower. The integrated Mercury SmartCraft suite of digital technologies relay all boat data – including trim, engine RPM, fuel consumption, and more – which are displayed on the 9” Simrad screens at the helm.
A joystick and trim tabs with indicators come standard.
More Horses. Four Winns offers a selection of engine upgrades. The 350 Verados can be upgraded for $4,384 to the Cold Fusion White color scheme. The more powerful 400 RXXL Verado, which has a water-cooled supercharger and molded intake snorkel like the 350, but produces up to 400 horsepower is an additional $30,538. The 400 is offered in standard black while the Cold Fusion White is an additional $4,384. Twin Yamaha F350s with the Helm Master System is available in gray for an additional $12,153 while white outboards are accessible for an additional charge as well.
The Horizon 350 OB has a length overall of 35’0” (10.67 m), a beam of 10’10” (3.30 m), and an approximate dry weight of 13,300 lbs. (6,033 kg). We tested the Horizon 350 OB with two Mercury 350 Verados with gear ratios of 1.75:1 turning Mercury Rev 4 17” pitch props. With two people and 82% fuel (approximately 168 gallons) onboard, our test boat weighed 14,228 lbs. (6,454 kg).
Top Speed. Running in calm seas, we saw a top speed of 46.6 miles per hour at 6000 rpm.
Best cruise came at 5000 rpm with 34.7 mph. At that speed, the 30.3 gph fuel burn translated in to 1.1 mpg and a range of 152.6 statute miles.
In acceleration tests, the 350 OB reached planning speed in an average of 6.9 seconds. She continued to 20 mph in 10.9 seconds and to 30 mph in 15.4 seconds.
The Horizon 350 OB is built with Four Winns’ patented “Stable Vee Hull,” which the builder claims delivers greater lateral stability at rest and underway, with lower plane speeds and lower bow rise under acceleration.
A major feature of the hull are the “After Pods,” extensions built into the stern of the boat, that add buoyancy to the stern at rest or at displacement speeds. This minimizes bow rise at slow speeds. Once on plane and the hull rises, the “after pods” are now out of the water, thus reducing their drag to increase speed. The stepped, angled, and lifted design maximizes acceleration, visibility, and operating efficiency.
The hull has a 19-degree deadrise which is a good compromise, and a typical deadrise used in class, between a deep-V hull for a softer ride and a flatter bottom for higher speeds and more efficiency.
The expansive, molded fiberglass swim platform has a low profile that extends low to the water for easy entry. Despite the outboards taking up space on the stern, the swim platform has 3’5” (1.04 m) of space for hanging out and for launching watersports on each side of the boat.
Three adults can sit on the aft bench seat, which has adjacent audio controls and cup holders, can be electronically adjusted to move the seat back fore and aft, transforming it into a wide chaise.
The leg rests can be raised or lowered electrically for individual comfort. This bench shares the backrest with the aft cockpit settee. Built into the side of that same bench seat is a water tank and pullout hose shower system for rinsing off.
Cockpit Social Zone
With the port doublewide pedestal seat facing forward, passengers have easy access to the controls for the air conditioning and the sound system, as well as cup holders. This seat, as well as the companion helm seat, can swivel aft to join the social area of the cockpit. Set deep into the boat, there is comfortable seating for 8 to 10 passengers.
The aft bench seat sits on what would have been the engine box in a sterndrive model, but in this outboard model it sits over a large storage compartment. To port is another fore and aft bench seat. In the standard version, an aft-facing seat is positioned just abaft the helm seat.
An al fresco galley completes the package. In addition, side mount tables can be fitted in the aft cockpit and the forward bow rider seats can be transformed into a dining booth.
Additional interesting features are the cockpit hardtop, which is constructed with a manual sunroof, and the optional SunShade powered awning that extends aft. LED lights are mounted overhead, and there is a remote-controlled spotlight mounted just above the helm.
The helm has a tilt-capable stainless steel wheel dual 9” Simrad displays for boat-data and navigation. Within easy reach is the switch panel for the electronics, and to the right of the wheel, the optional VHF mic ($1,300).
Our boat was equipped with the Mercury Joystick Control for Outboards, which is standard equipment. It is placed forward of the armrest along with the power adjust buttons for the helm seat and the dual throttle controls. There is an optional air conditioning vent above the joystick pointing at the captain.
The windshield is curved from top to bottom and side to side and has a stainless steel header. Four Winns calls this their “3-D” windshield, like automobile windshields.
Like most boats in class, the breaker panel is under the helm dash and hard to see. Otherwise, we found the 350’s helm well-designed and ergonomic. And the seat configuration is one of the best in class, with two separate seats with bolsters, and the captain’s seat on a four-way electrical switch.
The captain and companion seats are well padded and contoured. The captain’s seat is powered and can be adjusted in four different directions, and is one of the best in class. The companion seat adjusts manually.
Pass through the glass cockpit door to enter the bow. The wind dam door is standard and latches in three places for security. There are two forward facing double seats with integrated armrests and wraparound seating to starboard. Lift up the bow seat to find a built in cooler and space for other items. Fill in cushions can convert the space into a giant sun pad.
Ground Tackle. Forward of the bow is the anchor locker which is accessed by lifting up the bow panel. The optional Quick windlass ($2,467 with anchor, line and chain) can be actuated from the bow or from the control at the helm.
Below Decks Accommodations
Slide open the portside hatch and step down into the cabin. This cabin provides a lot of utility. It can be used for adults to take a nap when they’ve had too much sun, or for kids to take a nap when they get cranky. With the standard microwave snacks can be prepared or instant coffee made. The TV provides another activity for guests. The cabin can be air conditioned or heated.
The starboard settee makes into a bed with a filler cushion and the berth behind the companionway is another. This is certainly large enough for a couple or, perhaps, a small family for long weekend overnighting.
After arriving below, immediately to port is a galley counter with a microwave. Below the counter is a flat screen TV and Fusion stereo control. The headroom is 6’ (1.82 m) at this point.
The Head. Forward of the stairs is a door to a private head compartment. Outboard is a counter and sink with faucet and trash basket below. An electric VacuFlush toilet is available ($1,853). The height of this compartment varies from 5’6” to 5’9’ (1.68 m to 1.75 m).
Pass beneath the walkway deck (3’8”/1.12 m clearance) to the starboard side area, where Four Winns has installed an L-shaped settee. The seat can be expanded with a filler cushion to make a berth. Headroom above the settee reaches 6’7” (2.01 m). Throughout the space are windows providing airflow and natural light.
Options to Consider
• Upgrade the cockpit flooring to real teak ($15,857)
• Install air conditioning and heating system ($5,353)
• Flat screen TV for the cabin ($1,167)
• Windlass with rope, chain, and anchor ($2,467)
• Camper canvas, Sumbrella ($4,433)
• Cockpit cover and forward cover ($1,233)
Four Winns offers a three-year warranty on components, a five-year warranty on osmosis gel coat blistering, and a lifetime warranty on the hull structure. The outboard engines carry their own warranty, in the case of Mercury, it is three years.
The base model starts at $335,385.
Four Winns strove for beauty, comfort and class with the Horizon 350 OB, and they delivered a vessel that is both visually appealing on a grand scale with excellent attention to small details. The reverse transom, rounded stern, and curved windshield are eye-catching, while the stainless steel fixtures and hand-stitched upholstery make the boat feel classy. She is a premium boat that has been well-designed and thought out.
She is loaded with gear that is often optional equipment of other boats in class. Things such as a fiberglass hardtop and joystick are often costly upcharges, but with this boat, almost everything needed for normal day boating is included. The hard part for consumers will be when they consider how they are going to use the boat – and if for more than day boating, how many of the options will be useful?
The addition of a small generator (make sure it is low CO and installed by the factory) adds a lot of possibilities for a boat like this. She should not be thought of as just a luxury day boat, because she can do much more. A generator, together with cruising canvas, can turn this day boat/weekender, into something much more. We can imagine taking her coastal cruising in summer weather most places.
Test Result Highlights
- Top speed for the Four Winns Horizon 350 OB (2019-) is 46.6 mph (75 kph), burning 51.0 gallons per hour (gph) or 193.04 liters per hour (lph).
Standard and Optional Features
|Outlet: 12-Volt Acc||Standard|
Boats More Than 30 Feet
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