Building a Foam Core Powerboat

This site will report on the building of the 'Hawk41', a 41ft sea-going launch. It's specifications are: - Length: 12.50 m - Length waterline: 12.07 m - Beam: 3.27 m - Draft: 0.75 m - Displacement: 4.3 t - Engine Power: 184 kW.
The vessel will be constructed from a foam core sandwich using the 'controlled vacuum infusion' technique.

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Location: Utrecht, Netherlands

Monday, November 21, 2005


Now I have to come back on my visit to Mets. As mentioned before I met Arjen Korevaar. He delivers a software program called "RTM-Worx". This program makes it possible to emulate the infusion process on a computer.
Henny insisted that the 'amateur' cannot do without this program. The materials are just too expensive to run the risk of a failure. Although the setup of the mold, the foam core and the glass fibre layers can be done at ease, and corrections can be made any time, once the infusion process has started the point of no-return is passed. It has to go well or all material is lost. Some testing in the 'virtual world' is therefore a must.
Got to get a copy of that software!

I witnessed an Infusion!

Yesterday I had the honour to be the guest of Henny van Oortmarssen, who is building a 39Ft. trimaran in his garage. What an astonishing experience!! Henny also maintains an incredible site on the subject!
The Fram is made from a foam core of 'CoreCell' and epoxy, using the 'vacuum infusion' technique. I witnessed the infusion of the outer layer of a float, which was done in a single shot. He uses a surpisingly little vacuum pump, that formerly operated in some laboratory.
Yes, I am completely convinced now that for me this is the way to go: the process is absolutely clean and delivers the theoretical quality limit. Hand lay-up cannot ever reach this!

Thursday, November 17, 2005

The people that I met

Visited the Metstrade Fair yesterday. This is a BIG fair!
These are the people I met (among others):
Arjen Korevaar from Polyworx, Iman Padmos from Padmos Steyr Motors Benelux, Leigh Michau from Q-SPD; Rob Wink from RobWink Serious Seatools and Pieter A. van der Weide from the European Certification Bureau Nederland BV. I also met Peter Bosgraaf who was accompanied by Daan Kornet. The latter is studying the possible choices with respect to the drive. I suppose he will be the one who is going to decide if the QuantumDrive from Q-SPD must be the way to go!
The coming days I will come back on my conversations with these people.

Tuesday, November 08, 2005

An invitation for Metstrade

Looking for a drive that might propel the boat in the most efficient way I surfed the web for "Surface Drives". Thus I stumbled on DINTRA, the dutch representative for Q-SPD.
They (Dintra) were so kind to invite me for this fair, which is most appreciated!
In the second half of next week I will report on my visit.
For your information: I added links for Dintra, Q-SPD and METS to "My Links".

Saturday, November 05, 2005

a Menu on the 'SideBar'

I added a menu on the sidebar. These links will refer to parts of the boat or the building process. Under these links I want to aggregate all my posts concerning a specific subject. In this way you will be able to get direct access to all my posts no matter how old they are.
(Currently only the 'Introduction'-link is working. It doesn't give you any serious information yet, however...)