Vagabond Scupper Venturi

Instead of using scupper holes and plugs in the seat and footwell of our boats, we have incorporated our own scupper venturi design.

This venturi system works with forward motion to ‘suck’ water under the hull to drain the deck. This has two purposes. First, if you paddle through waves and a lot of water is dumped into the cockpit, the low pressure that is formed behind the venturi will suck water out faster than it would drain purely by gravity. And second, when you paddle forward with most sit-on-tops, even on flat water, water tends to splash through the scupper holes from the bottom, which can be quite unpleasant. The scupper venturis prevent this ‘back-splash’. This results in a more pleasant and quieter ride.

The scupper venturi consists of two parts: one top and one bottom. They are fixed together with a screw from the top. By tightening the screw, the two parts are wedged into the scupper hole. The advantage of this system is that no holes are drilled into the hull of the boat to install the venturis. If one breaks, it won’t damage your kayak in any way, and it is super easy to replace, if needed.

Under the hull, the scupper venturi fit into a recessed channel to prevent them from catching on anything and from being damaged.

There are no venturis in the tankwell. Water drains out of these scupper holes by gravity.