NAVICO GROUP FATHOM 2.0

Engine charging at 48 volts could be a game-changer.

- Charles Plueddeman

Brunswick siblings Mercury Marine and Navico Group have teamed up to create the next version of the Fathom e-power system supercharged by a new outboard motor alternator. Fathom-a lithium-ion auxiliary power system designed to replace a generator-debuted at the 2020 Consumer Electronics Show installed in a Sea Ray SLX 400 Outboard. It's been offered as an accessory for the past year. At the recent introduction of the Mercury V-10 Verado 350 and 400 hp outboards, a new Fathom component was revealed: a dual-mode 48-volt/12-volt alternator, capable of delivering up to 6.5kW of power (per engine) in 48V mode. The dual-mode alternator will be a component on the Mercury V-10 350 and 400 hp and V-12 600 hp Verado outboards only when those motors are rigged to a boat with the Fathom e-power system. Beginning in 2023, Brunswick will make the Fathom e-power system available to boat builders that are not part of the Brunswick Boat Group. Because of the complexity of integrating the entire Fathom system with the boat's electrical system, we don't expect builders, including Sea Ray, to of fer Fathom with the 48-volt alternator before the 2024 boat season. Boat builders will determine retail pricing. Sea Ray is currently pricing Fathom with 12-volt engine charging at $26,400. There is no credit for the value of a deleted 7.5 kW genset.