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THE AEOLOS HISTORY: Less weight means more sailing fun

Borne thanks thanks the Corona-Virus

Hans Genthe is a boat tuner by passion. Sailing a Flying Dutchman in the 80s meant constantly pimping your boat. Hans Genthe loved it and never stopped. He studied 2 years ship design but switched to marketing/design. So he "only" pimped his BB10, an ASSO99, Rainbow 42 and some more >>

At the 14 May 2020, bored by the lockdown here in Dubai, Hans made a pencil design scribble of a 30' sailing boat, and posted it at facebook. The Feedback was great, more than 300 likes and endless comments. So he started a proper 3D Design in Rhino and made a calculation/proposal. All the experience on fast boats, combined with appr. 100.000 miles sailing went in a new design. With success: 2022 the AEOLOS P30 is a series production yacht, built in carbon prepreg.

But why? What is different? Let´s have a look into yacht design! Sailing fun is all about weight

In various forums the question arises again and again which cruising yachts can plane. Hans has already dealt with this question for the first time in 1982 and found the first correct and well-founded answer in the first edition "Konstruktion und Bau von Yachten" by H. Dieter Scharping (author). Then he was able to learn a lot in the towing tank of the Hamburg Shipbuilding Research Institute during his shipbuilding studies - and was able to see it very practically: The more curved the lines underwater, the more difficult it is for the boat to detach itself from the wave system and leave its transom wave behind (planing). Roughly speaking, from 15 degrees exit angle in the last 20-30% of the ship, a boat regularly starts surfing and can also plane.

The more weight a boat has, the more buoyancy it needs, and the more curved the lines of the underwater ship become, the worse it can planing or surfing. The planing ability therefore depends less on the width and more on the weight. Wide yachts can carry more weight with flatter lines. The BB10 can plane with only 2.3m width, but the boat weighs only 2.2t. But you have care about your luggage - more than 30kg/person was not allowed. From this follows: speed when sailing is not witchcraft, but a matter of sacrifice or money. Weight therefore influences the shape. So: the lighter the boat, the flatter the underwater hull. Then you just have to have enough sail area, and off you go. You can save weight by building lightly or doing without comfort: a) many large stringers that divide and stiffen the space inside (little space) b) High performance materials (expensive) c) install little stuff/comfort (waiver) d) Comfort super light construction (very expensive, many custom-made products) A typical low-cost cruising yacht from a serial shipyard has flat stringers, a thick (heavy) hull, cheap (heavy) equipment and is therefore overall heavy, round and not particularly afloat.

Extreme counterexample: The ASSO99 has 0 degrees thanks to hollow lines in the transom (possible thanks to 1.1t at 10m length) and has no real transom wave anymore. Since a keel boat cannot plane upwinds, one could simply increase the sails PS by using large downwind sails. But with heavy ships this only helps in light winds. So that it becomes clear where to put the weight, a few key figures about boats that Hans has sailed a lot and that can plane permanently. All boats have an exit angle of less than 10 degrees at the stern. - BB10 10m, 2.2t, 1.2 ballast, planing starts with 5 Beaufort. Surfs with 4 Beaufort - Farr 280: 8.7m, 1.35t, 0.65t ballast, planing: 3-4 Beaufort Link Silverrudder story >> - ASSO 99 10m 1,1t , starts with 3 Beaufort Video >> - Rainbow 42: 12,7m, 3,6t, 1,6t ballast, planing: 4-5 Beaufort ... Refit report here >> - Rogers 46, 14m, 6t, 3t ballast, planing: 4 Beaufort Video >> In comparison, cruising yachts Hans has sailed: - Dehler 35 SQ: 10,5m, 5.5t, ballast 1,8t, does not plane, can surf - Hallberg Rassy 41: 12m, 12t, ballast a lot, is never planing - Swan 48: 14,6m, 16,7t, is never planing, but upwind super

2015-2019 Hans worked intensively for Elvstrøm and has sailed a lot of cruising yachts, because he went always out with the new sails to check and trim. He made NEVER a planing experience with these boats.

The AEOLOS sailing rockets

Based on this knowledge, Hans put a team together and developed the AEOLOS P30 and the AEOLOS P45. Leading engineers checked and optimized his ideas and proofed everything with CFD and FEM technology. This two models are the foundation of a new Yacht Brand:

At AEOLOS we have one mission: We think you deserve to have fun with sailing. That means we make your sailing life easier, we use carbon prepreg in series production and can therefore use much lighter components, they also become lighter and MUCH cheaper. We have developed the prepregs ourselves and manufacture them within our group of companies. This allows us to offer fast, inexpensive boats that are incredibly fun to sail and can easily break the 20 knot mark in downwind reach. That's why we are breaking new ground in series production.

AEOLOS P30, the carbon budget racer.

The idea behind this boat is to offer a carbon sailing rocket without a great variety of options but with high-quality basic equipment at a really good price, so that everyone can easily adapt the boat to their individual needs with comfort or other technical equipment. More about the AEOLOS P30 >>

AEOLOS P45, the luxury racer. This boat can offer a lot of cruising comfort but also pure speed. Therefore are two versions:

The modern, ultra-light interior of the AP45-L offers a kind of unknown luxury on a pure racer. The interior combines high-level technology and luxury equipment with premium-quality materials. If you don´t like to compromize, then choose the AP45-R. It is an inferno machine... it is the perfect fusion of technology and design, 3,6t light.

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