The main benefits of an extendable gennaker bowsprit:

• Gives the gennaker more clear air  

• Facilitates rapid gybing

• Always ready for quick extension

• Makes for fast and efficient gennaker handling

• Improves performance when gennaker sailing

• Can be fitted to most yachts

• Available in carbon or aluminium

Extendable aluminium gennaker bowsprit sold as a kit for deck mounting. Fit the two foldable stainless steel pad eyes to the deck in line with the bow bracket (bracket to be ordered separately) and you will have two attachment points for the inboard (aft) end of the bowsprit. The forward pad eye is used when the bowsprit is pushed out and activated. The aft pad eye is for "stand-by" storage, and if required, the bowsprit can be quickly removed and stowed securely below deck. 

The gennaker tackline runs through the bowsprit, entering and leaving via well rounded holes, and then aft to the cockpit.

Add a D-shackle to the outboard end and it will allow attachment of a top-down gennaker furler. Attach the furler, push out the bowsprit and engage it to the foldable pad eye and you are all set for efficient and fun downwind sailing.

The bow bracket is a stainless ring with a low friction polyamide inner lining through which the bowsprit slides into its “active”  position. It must be fixed to a strong and solid part of the bow as it will handle high load, both vertical and sideways. Four different versions of bow bracket rings are available and which one to use depends on the design of the bow. 

By using our digital calculator you can easily determine which dimension of bowsprit/bow bracket you need for your boat.

https://support.seldenmast.com/en/services/calculators/bowsprit_calculator.html

This is based mainly on the righting moment of your boat, the unsupported length (USL) of the bowsprit and the Distance between supports between the bowbracket and the forward pad eye (DBS). 

Important - this product is designed and dimensioned primary for gennakers/asymmetric spinnakers and not for Code Zero sails. A Code Zero is projected to very high load and for the bowsprit to be used, the USL must be drastically reduced as opposed to when used for gennaker.