Image icon  Deck and hull sections of GRP and Topper boats.

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Description: This is a schematic image showing the glass reinforced plastic (GRP) (left-hand side) and (right-hand side) Topper boats compared: (a) deck sections, (b) hull sections. The redesigned boat incorporated a higher rake angle on the mast access slot and a daggerboard box with failsafe plate.
The Topper is a one-design boat sailed mostly in the British Isles. The Topper was originally designed with a 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 • glass reinforced plastic • GRP • hull • deck • polypropylene • lightweight • dinghy • design • composite • image
Categories: Materials > Polymers & elastomers
Materials > Polymers & elastomers > Plastics
Materials > Polymers & elastomers > Plastics > Thermoplastics > Polypropylene (PP)
Applications > Sports & leisure
Other topics > Design
Created by: The Open University
Mike Levers, The Open University
Contributions: Mike Levers, 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: 3299