Small boats need reliable bilge drainage without oversized pumps that cycle too quickly. SEAFLO automatic bilge pumps combine pump and float switch in one housing — a strong fit for DIY installs.
Boat Size & GPH
For runabouts, kayaks with bilge wells, and fishing boats under 24 ft, 750 GPH at 12V covers typical rain and spray intrusion. Step up to 1100 GPH if you fish heavy seas or have a deep V-hull with a large bilge sump.
Automatic vs Manual
Automatic pumps run when water rises — no helm switch required. Manual pumps cost less but need a 3-way switch panel for Auto-Off-Manual control. Many owners install automatic as primary and manual as backup.
Wiring & Fuse Size
Use a dedicated fuse (typically 15A on 12V for 750 GPH models). Route conductors above the waterline and use tinned marine wire. See our installation guide for step-by-step wiring.
Our Top Pick
The SEAFLO 06 Series 750GPH automatic pump is the best all-around choice for small boats — built-in float switch, 3/4" discharge, and strong Amazon ratings.
