Honda BF20D3SRT Outboard - 15" Shaft Remote Control Electric Start Power Tilt Silver. Overview. The BF20D3SRT is a short-shaft 20 HP outboard configured for remote control-built for boats that want helm-based steering and clean console rigging, while still using a 15" shaft transom height. This setup is a great match for small fishing boats and skiffs that run a short transom but are laid out like a "mini big boat" with steering and controls at the helm.. At 20 HP, you gain a more confident feel