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Yamaha Boosts The Power: XTO Offshore

Upgraded XTO Offshore Outboard delivers greater convenience, enhanced charging technology, and 450 horsepower.

Three Yamaha F450 XTO Offshore outboard engines in action cruising through the blue water

Yamaha F450 XTO Offshore outboard engine Phase Angle Control charging system illustration
The phased angle control produces 96 net amps per outboard.

Yamaha adds 25 new horses and more charging power to its F425 platform with the new F450 XTO Offshore. Changes in the intake and exhaust design, cams, and valves have enabled the added power without otherwise changing the engine's max rpm or physical footprint.

The F450 also boasts a new charging system with phased angle control to produce 96 net amps when in neutral, enough power to feed juice to high-demand items like gyrostabilizers, air conditioning systems, and more.

Net output is per outboard and is stackable, multiplying amperage output by the number of outboards. That means up to 480 net amps in quint configuration. Starting power is always maintained. Full charging power goes first to starting batteries until charged, then it's directed to the house batteries The system includes built-in reverse polarity protection and prioritizes keeping starting batteries at full charge.

Yamaha's XTO Offshore - Convenience and Control

Another bonus feature on the F450 is "TotalTilt," which lets you tilt then engine from any position to full up or full down with a double-tap of the switch. Yamaha has also brought new features and function to its F150/F200 DEC models by adding integrated electro-hydraulic steering. With a steering control unit under the cowl and an integrated hydraulic pump in the bracket, this eliminates all those exterior hoses and pumps for cleaner rigging and more available onboard space. These motors enjoy TotalTilt functionality, as well. And, in order to save space on F200 and F250 installations, Yamaha has combined the conventional hydraulic lines with an integrated pump.

Three Yamaha F450 XTO Offshore outboard engines tilted in the upward position

TotalTilt makes for faster, easier engine tilting.

Helm Master EX gets upgraded for 2023 as well, integrating bow thruster control and a DEC binnacle. Start/stop switches are now located on the binnacle itself (eliminating the need for a separate switch panel) and the DEC controls now feature the same "soft grip" material found on the joystick. All of these upgrades and updates are expected to be available in spring 2023.

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Lenny Rudow

New Boats, Fishing & Electronics Editor, BoatUS Magazine

Top tech writer and accomplished sports fisherman, BoatUS Magazine Contributing Editor Lenny Rudow has written seven practical boating books, won 30 awards from Boating Writers International — many for his marine electronics articles – and two for excellence from the Outdoor Writers Association of America. He judges the NMMA Innovation Awards, and is Angler in Chief at FishTalk, his own Chesapeake-based publication. A great teacher and inspirational writer, Lenny hosts many of BoatUS Magazine’s very-popular how-to videos, which can be found on the BoatUS YouTube channel, or at