Whale Supersub 12V 1100GPH Low Profile Automatic Bilge Pump

The Whale Supersub 12V 1100GPH Low Profile Automatic Bilge Pump is a compact, high-capacity marine bilge pump engineered for boats with tight, confined bilge spaces where standard-profile pumps simply won't fit. With a flow rate of 1100 US gallons per hour and 12-volt DC operation, this automatic bilge pump delivers reliable water removal for small to mid-size recreational boats, fishing vessels, and cabin cruisers that demand efficient, unattended operation in their most cramped compartments.

The Supersub's narrow, low-profile design is its defining advantage: the pump body and outlet port both rotate to suit your specific installation geometry, meaning you can orient the unit to snake into bilge spaces that would defeat a traditional vertical pump. At 1100 GPH, the pump moves significant water volume without consuming excessive amp-hours from your boat's battery bank—a critical consideration for extended cruising or overnight anchorages. Automatic float-switch activation means the pump engages only when bilge water rises to a preset level, eliminating manual operation and reducing unnecessary power draw during calm conditions. The compact footprint (7 x 3 x 12 inches) and lightweight construction (1.2 lbs) make installation straightforward, requiring minimal structural reinforcement in older hulls or space-constrained designs.

This pump is ideal for weekend fishermen operating small center consoles, anglers maintaining older wooden or fiberglass vessels, and serious cruisers whose bilge architecture demands a solution that doesn't compromise existing stowage. Salt-water exposure is inevitable in marine service, so verify your through-hull fittings and discharge hose are compatible with corrosive environments. For vessels with particularly tight pumping requirements or extended idle periods, pairing this unit with a manual backup pump provides insurance against electrical failure. The Whale Supersub series is recognized in the marine market for balancing capacity with installability—making it a practical choice when standard bilge pump dimensions prove impractical.