Leeward Hull is coming together

The side panels of the main hull are glued on now. Eventually, it looks like a boat!

Center panels on!
Gluing everything in place with epoxy fillets (white)
Ready for more fillets . . .
Bow panels on
The innovative double asymmetric shape is clearly visible now. The lower section is flat leeward and rounded to windward for improofed helm balance. The middle section comes symmetric and the top section is asymmetric with the bigger volume to leeward (opposite to the lower section). This shape was favored after intensive model testing because of its capsize characteristics: even if the proa heels 90° the righting moment stays positive and keep the boat upside up.
Hull shell almost finished

Proasis on the Viking way of life

We became friends to the famous German circumnavigator and adventurer Burghard Pieske short after he returned from his “Ana Varu” voyage early 2019.

The pacific proa “Ana Varu”

Ana Varu is a pacific proa. Burghard sailed her from Taiwan to the Marianne’s where he successfully supported the local boat building and sailing communities. Unfortunately “Ana Varu” capsized and was lost to the big blue. But we doubt that the Ana Varu voyage is over yet! Further information can be found here and here.

Aside of his interest for the pacific sailing traditions, Burghard is an expert for European sailing history too! Especially the viking age era in northern Germany and Scandinavia. As part of the Euro Viking project he uses his knowledge for a training program for socially disadvantaged youths and put them back on the road of life. Burghards work is outstanding and deserves honor!

Christian, Henrik and Burghard in front of the molds of a modern viking ship for the Euro Viking program.

Beams under construction

The cross beams are key components of every multihull. Proasis’s beams are made from plywood and timber in a hollow construction. The outside is reinforced with glassfiber. Each beam is 4.5 m long and weights about 25 kg.

Closed beam on the left, open cross section on the right.
It doesn’t matter how many clamps you have . . . you will run low! We clamped 40 on each beam and could have used 60 ore more.

Work on the hulls started

Glassing some bulkheads for the leeward hull

Doesn’t look like a boat yet but we aim to finish the bigger hull of our proa by end of October.

If you like to take a look by yourself feel free to visit us in our workshop:

Its located 15 km from Kiel. The easiest way to get there is to catch a train to Flintbek (regular trains between Hamburg and Kiel stop there). If you take a car leave the A 215 at Blumenthal.

You will find us there every afternoon for the next couple of weeks. Don’t be shy, we are happy about all guests and visitors!

We’ve got a boatyard!

Thanks to some friends we’ve got access to a very nice workshop close to Kiel!

Work on Proasis will start there later this month. If you want to learn how a boat is built feel free to visit us and join the construction team! Everyone is very welcome to become a part of the Proasis team!

Our new boatyard. Boat is almost finished. Just need to magnify it 25 times.

International Climate Strike

Proasis proudly participated in the international climate strike on September 20th.

Together with 15000 more we blocked the main highway of our state capitol Kiel.

250000 people marched in Berlin, 1.4 million in whole Germany and multiple more around the entire world!

100000 in Hamburg

We are amazed and grateful to be part of making environmental protection and conservation a mass movement!

We rise like the sea level!

Rig production is going on!

As promised in our last post we managed to the sail this week!

As sailcloth we got a strong PE sheet (also known as polytarp). That’s exactly the sort of stuff the people in Micronesia using for there sails.

Exceptionally we bought it new but spend only 40 bucks.

Nice place for lofting! Thanks to STS, our sailing club, for their gym!
Laying out everything to get the shape.
Cutting the cloth
Sewing. We used a very cheap DIY sewing machine, nothing special for sails. It worked well but but professional machines would give a better result.
More cutting . . .
More sewing . . .
Finished !

We hope to setup the sail for test purpose during the next days. Read more in our next weekly update!

Rig production started

Maybe an odd way to start building a boat, but the very first part of proasis will be the rig (naval term for mast, sail and all other parts belonging to them). Why? That’s a bit of a story:

Originally, proasis was supposed to get a free standing carbon mast (free standing means no shrouds to hold it up) with a soft wing sail on it (see a video of something similar here).

1:5 model of the originally planned wingsail

Aside of the not very sustainable carbon part we never got happy with the design:

  • Much additional work for the mast construction
  • High expenses for the materials
  • Even more work for sewing the sail (it needs sewed in shape!)
  • High bending moments in the leeward hull around the mast bearing
  • Unsustainable design, many new and non degradable parts involved

We thought about many workarounds and fancy designs but eventually came back to the (Marshallese) oceanic lateen sail!

Marshallese canoes with oceanic lateen sail

Proofed for centuries on the pacific, the biggest ocean of our planet. For us the best sail possible:

  • Decent performance (we measured the performance of marshallese canoes!)
  • Simple and cheap to build (spars and flat cloth only)
  • Low center of effort
  • Low stress in the sailcloth

For the spars we were lucky to get tons of old windsurfing mast for free by our sailing club:

Old windsurfing mast, ready for recycling!

The windsurf mast were simply transferred into mast and booms and laid out to test the geometry for shunting:

Geometry of our sail

Next week we will get some cloth and sew the sail. Stay tuned!