Whale Seaward 11 Gallon Hot Water Heater w/Rear Heat Exchanger - Galvanized Steel - 120V - 1500W

The Whale Seaward 11 Gallon Hot Water Heater with Rear Heat Exchanger in galvanized steel is a compact marine water heating system designed for vessels where reliable hot water and efficient heat recovery are mission-critical. Built by Whale Marine to withstand salt spray, sustained vibration, and constant moisture exposure, this 120V electric heater delivers 1500W of heating output in a footprint that fits tight engine room installations while maintaining the thermal performance offshore and inshore operators depend on.

The 11-gallon capacity balances storage against weight—at 32 pounds, it remains manageable for installation without compromising hot water reserve on extended runs. The rear heat exchanger integrates engine coolant recovery, converting waste engine heat into usable hot water and reducing overall electrical load on your battery bank—a critical advantage during extended offshore fishing when genset runtime must be minimized. Galvanized steel construction resists corrosion from saltwater spray and humidity far better than bare steel, though it requires occasional freshwater rinsing to prevent mineral buildup in high-salinity environments. The 1500W heating element provides responsive recovery time between showers and deck washdowns on fishing vessels and cruising boats alike.

This heater suits weekend anglers upgrading from portable solutions as well as serious offshore operators running year-round. The 120V requirement means you'll need either shore power or a properly sized inverter during time away from the dock—standard for marine hot water systems but worth confirming before installation. Mounting dimensions of 17 × 17 × 26 inches fit standard marine locker layouts and engine room spaces on vessels 30 feet and larger where dedicated fresh water systems justify the weight and cost investment.