Please select your home edition
Selden 2020 - LEADERBOARD

New Oyster 495 benefits from Seldén Mast's new push button sailing technology

by Seldén Mast 22 Nov 2021 10:37 UTC

When the first Oyster 495 hits the water in early 2022, it'll be sporting a Seldén carbon furling mast with new push button sailing technology developed specifically for this new model, the likes of which has not been seen to date on a sub 50ft yacht.

Building on its Synchronised Main Furling (SMF) system which synchronises an electric motor in the mast with its new E40i electric winch for the outhaul when unfurling the main, Seldén has automated the system even further to offer a true push button sailing experience.

To make sail handling even easier for a small crew, Seldén removed the E40i electric winch from the SMF system and fitted small aluminium hydraulic cylinders in the boom to control the outhaul when both furling and unfurling the sail.

In boom hydraulic cylinders for outhaul and mainsheet control is not a new concept but, due to these previously being low pressure large steel cylinders, their size has made them prohibitive for use on yachts below 50ft.

Seldén's development of a smaller aluminium cylinder at a higher pressure has dramatically reduced the required power pack size and the weight by 50%. This innovation means that a hydraulic outhaul can now sit alongside a hydraulic mainsheet, with both enclosed within the boom of the Oyster 495, allowing the owner push button control of the mainsheet and the outhaul.

The system is powered by Seldén's proprietary control system, SEL-Bus, which is fully integrated across the yacht for all electric and hydraulic Seldén product ranges. The SEL-Bus system converts 12V or 24V to 42V, allowing much smaller and thinner cables around the vessel. The system also communicates between the different units onboard, offering a diagnostic function to enabling the system to reduce power consumption by putting the system into 'sleep' mode when not in use.

In addition to this creative solution to sail handling, which is usually the preserve of much large yachts, Seldén is also supplying the Oyster 495 with a Furlex Electric head sail furler, hydraulic vang and hydraulic backstay ram - all of which will be connected to the SEL-Bus system and controlled at the touch of a button from the helm station.

"The Oyster 495's push button sail controls will allow the yacht's crew to sail completely from the cockpit, reefing, furling and trimming the mainsail and the head sail at the touch of a button," says Steve Norbury, managing director at Seldén Mast. "A safe, secure and extremely convenient way to sail, especially when short-handed or with an inexperienced crew.

"We've supplied Oyster with over 50 masts in the last decade or so on models ranging from the 475 to the 745, so developing this technology specifically for their 495 not only strengthens our long-term partnership but demonstrates that Seldén is at the forefront of design for sail and rig control solutions."

Andrew Martin, Oyster 495 programme manager comments: "Oyster is delighted with the bespoke development of the SEL-Bus furling system which, with a single button powered solution to mainsail management, takes sailing automation to another level on board the Oyster 495. This is just another innovation that will make sailing this new breed of bluewater sailing yacht a simple pleasure for a couple or young family.

"In mast furling has long been Oyster's tried and tested reliable bluewater sail plan. The SEL-Bus furling compact hydraulic power system is simpler to install on our smaller boats and along with other unique features sets a very high standard on this new bluewater benchmark."

For more information on Selde´n Mast and its products visit

Related Articles

Seldén Mast's latest Race GRIP winch handle
Incorporating an innovative and logical solution to the locking mechanism Swedish marine equipment manufacturer Seldén Mast is pleased to announce its latest series of patented Race GRIP winch handles, which have been designed to offer a more practical solution to the locking mechanism for a more seamless sailing experience. Posted on 17 May
Seldén Mast launches innovative kicker fitting
Take a look at the RYA Dinghy Show next weekend The world's leading manufacturer of mast and rigging systems for dinghies, keelboats and yachts, Seldén Mast, is thrilled to be taking part in one of the most popular dinghy sailing and watersports events in the UK's marine calendar. Posted on 17 Feb
Seldén's new range of winches and winch handles
Presented by Mats-Uno Fredrikson at METSTRADE We spoke to Seldén's Mats-Uno Fredrikson at METSTRADE 2023 about the new range of manual and electric self-tailing winches. Posted on 19 Dec 2023
Seldén Mast strengthens sales team
Four new appointments to support its recent growth Gosport based Seldén Mast Ltd has strengthened its sales team with four new appointments to support its recent growth and to expand the sales of its spars, deck hardware, and furling systems into new markets. Posted on 1 Dec 2023
Seldén SailJuice Winter Series set for action
The Draycote Dash is the first of eight events across the winter months Back for the fifth year as title sponsor, Gosport based Seldén Mast Ltd continues its support of the popular off-season sailing series, which aims to provide the fairest possible handicap racing for small boats in the UK. Posted on 13 Nov 2023
Seldén launches new winches & winch handles range
An extensive range of manual and electric self-tailing winches It has given extra attention to the drum and the self-tailer to obtain a strong grip, a smooth release and the possibility to easily pull the slack straight out of the self-tailer with the winch handle fitted in the socket. Posted on 30 Oct 2023
Seldén Mast launches Seldén Pro app
For riggers, sailmakers, boat builders and designers Swedish spar manufacturer Seldén Mast has launched Seldén Pro, an innovative new app designed to ensure all riggers, sailmakers, boat builders and designers have the most up to date technical information about its products and systems. Posted on 18 Aug 2023
Seldén Mast to sponsor SailJuice Winter Series
Continuing support of the popular off-season sailing series for a fifth year Continuing its support of the popular off-season sailing series, Seldén Mast has announced it will return as title sponsor for the SailJuice Winter Series for the fifth consecutive year. Posted on 16 Jun 2023
Seldén Mast expands range of Roller Bearing Blocks
Ideal for backstays, mainsheet arrangements and sheets for downwind sails The low resistance, high dynamic load block range will now include larger single and single/stand ups in 100mm and 130mm diameter blocks, ideal for backstays, main sheet arrangements and sheets for downwind sails on yachts of various sizes. Posted on 14 Apr 2023
Hadron Dinghies Ltd appoints Seldén Mast
As the spar supplier to the Hadron H2 class Gosport based Seldén Mast is delighted to announce it has been appointed by Hadron Dinghies Ltd as the spar supplier to the Hadron H2 class. Posted on 13 Mar 2023
Selden 2020 - FOOTER