Image icon  Foam interior to front deck of a Topper dinghy.

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Description: This is a photograph showing polystyrene foam interior to front deck of a Topper dinghy, employed to improve compressive stiffness against point loads. In the areas such as the front part of the deck ahead of the mast, where point loads may deflect it unduly, a foam block of polystyrene has been incorporated to resist such loads. This solution harks back to the use of foam-core sailboards and windsurfers, and is a very common way in which hollow plastic structures can be reinforced.
The Topper is a one-design boat sailed mostly in the British Isles. The Topper was originally designed with a glass reinforced plastic (GRP) hull, however, it was later decided that the Topper should be constructed with injection moulding, using polypropylene, which makes it a relatively light but durable boat. Following this change from the GRP to plastic hull sales of the Topper soared.
Keywords: Topper boat • dinghy • glass reinforced plastic • GRP • polypropylene • hull • deck • lightweight • polystyrene • foam • design • composite • image
Categories: Materials > Polymers & elastomers
Materials > Polymers & elastomers > Plastics
Materials > Polymers & elastomers > Plastics > Thermoplastics > Polypropylene (PP)
Materials > Polymers & elastomers > Plastics > Thermoplastics > Polystyrene (PS)
Applications > Sports & leisure
Other topics > Design
Created by: Topper International Ltd
The Open University
Published by: The Open University
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
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Date created: 09 March 1998
Date added: 15 December 2010
Resource ID: 3303