The following entrants have been received for the UIM World Offshore Championship Class 3C - Guernsey 2008
| Boat no. - Name | Driver & Navigator - Nationality (Entrant no.) | Boat designer or builder |
| C6 - EFFE-PI | Achille Altimari & Giampiero Soave - Italy |
Modello argentin boat |
| C7 - Liquid Illusion | Kevin Walsh & Peter Crombie-Christie - Guernsey |
K4+ Adam Younger RIB |
| C9 - Hydrocat 24 | Thomas Rosen & Magnus Soderquist - Sweden |
Hydrocat - Cat |
| C10 - L'Esprit de Serq | John Guille & Barry Culver - Sark |
Lorne Campbell |
| C11 - Carpisa Yamamay | Diego Testa & Giovanni Di Meglio - Italy |
Harry Luvkila Twister Marine Cat |
| C12 - Batteries not Included | Chris Bryan & Mark Brewster - UK |
Hotboat cat |
| C13 - Circle Express | Brian Peedell & Pat Peedell - UK |
B23 Mannerfelt "BatBoat" |
| C17 - 'N' Class Fabrication | Ian Stirling & Alex Watson - UK |
B23 Mannerfelt "BatBoat" |
| C20 - Excalibur | Noel Giordani & Pierre-Paul Giordani - France |
Corsica Offshore Mono |
| C22 - GT One | Matthieu Baccellini & Julien Gobet - France |
Daniel Roberti Cat |
| C24 - Black Thunder | Will Nurse & Iain Nurse - UK |
K4+ Adam Younger mono |
| C27 - Brita Racing | Peter Little & Dave Arthur - UK |
Hotboat cat |
| C54 - Condor Ferries | Roy Smith & Peter Philipson - Jersey |
B23 Mannerfelt "BatBoat" |
| C56 - S B Racing | Scott Collings & Dave Simpkins - UK |
B23 Mannerfelt "BatBoat" |
| C57 - Team Sjolander | Johan & Magnus Sjolander - Sweden |
Hydrocat 24 |
| C61 - Karnag | Thomas & Annika Wrenkler- Sweden |
Hydrocat OR 25 |
| C111 - Apollo | Jean-Claude Baiocchi & Sebastien Giammona - France |
Corsica mono |
| C201 - AP Marine Racing | Alastair Pearn & Chris Reeves - UK |
Phantom Mono |