Whale Supersub 12V 500GPH Low Profile Non-Automatic Bilge Pump

The Whale Supersub 12V 500GPH Low Profile Non-Automatic Bilge Pump is a compact, efficient solution engineered for boats with tight bilge spaces where standard pumps cannot fit. This non-automatic model delivers reliable water removal at 500 gallons per hour, making it ideal for smaller vessels, tenders, and auxiliaries where manual control or integration with existing automatic systems is preferred. The low-profile design is the defining advantage here—it fits deep into narrow bilge compartments that would reject conventional pump housings.

Specification-wise, the pump operates on 12V DC power and is engineered to handle freshwater and light bilge conditions. The rotating outlet and pump body allow flexible installation orientation—critical when space is severely limited. At 0.8 pounds and measuring just 7 x 3 x 12 inches, this pump occupies minimal volume without sacrificing flow capacity. The non-automatic nature means it requires manual activation or a separate switch installation, reducing complexity and cost for boaters who want direct control or who already run automatic systems they trust.

Whale Marine's Supersub line serves weekend fishermen and cruisers operating smaller displacement craft, coastal day-boats, and emergency backup systems on larger vessels. The compact footprint appeals to restoration and retrofit projects where original bilge layouts leave minimal room for modern equipment. Non-automatic operation suits owners who prefer hands-on management or who run this pump as a secondary system alongside a larger automatic primary pump.

Marine bilge pumps balance flow rate, power consumption, and physical size. The Supersub's 500 GPH output is moderate by offshore standards but sufficient for small-boat service pumping and dewatering without overtaxing a modest 12V electrical system. The trade-off is intentional: narrow profile and low amperage draw in exchange for slower pumping speed, allowing installation in boats where deep-cycling a larger pump would stress the house battery or create electrical capacity issues.