RG-65 Class

 - Palo de Água

Designer: Fredo Vollmer

Building tips:

http://www.nauticurso.com.br/paloplanos.html (Portuguese)

http://losveleros.8m.com/palo/palo.htm (Spanish)

 - JIF 65

Designer: Maximo Lange

Building tips: included in the plans, with a lot of pictures (Spanish).

 - JIF2

An evolution of JIF-65.

Designer: Maximo Lange

 - Colombine

Designer: Pascal Delapierre

Building tips: http://navi.modelisme.com/article286.html (French)

 - Apsara

Designer: Pascal Delapierre

 - Alcaraván

Designer: Luís Pardo (http://www.canibalboats.com/)

 - Coriolis

Projetista: Arne Semken

 - Viperfish

Projetista: Arne Semken

 - Offset

Designer: Arne Semken

 - Blue Splash

Designer: Arne Semken

 - Laerke 65

Designer: Soren Andresen

 - Blue Dragon

Designer: ClaudioD

 - Trap 65

Designer: ClaudioD

 - Goth RG (file in .pdf format)

Designer: Frank Russel

Site: http://www.frankrusselldesign.com

 - Other RG-65 plans

IOM Class

 - Triple Crown (files in .pdf format)

Designer: Mark Dicks

Site: http://www.mya-uk.org.uk/suppliers/triplecrown.html 

 - Arrow (files in .pdf and .igs formats)

Designer: Charles Detriche

 - Sliver (files in .pdf and .igs formats)

Designer: Charles Detriche

 - Laerke (files in .pdf and .dxf formats)

Designer: Soren Andresen

Site: http://www.anderswallin.net/category/iom-design/page/2/

 - Noux 2 (files in .pdf and .igs formats)

Designer: Anders Wallin

Site: http://www.anderswallin.net/2006/03/noux-2-layout-plan-and-3d-iges-file/

 - Merlin (file in .dwg format)

Designer: Daniel Sherman

 - Vanquish (file in .dxf format)

Designer: Daniel Sherman

Site: http://www.dans-hobbies.com/category/model-yachting/vanquish-iom/

 - Predator (files in .pdf and .dwg formats).

Designer: Brett McCormack / Frédéric Ferré

 - Siria 2 (file in .dxf format)

Designer: Luca Rosetti

 - Scharming MK8 (file in .dwg format)

Designer: Michael Scharmer

 - Vision

Designer: Markus Bast / Andreas Schiebel

Site: http://www.freeform-design.de/Projekte/iom_vision.html 

 - Goth (file in .pdf format)

Designer: Frank Russel

Site: http://www.frankrusselldesign.com

 - Emo (file in .pdf format)

Designer: Frank Russel

Site: http://www.frankrusselldesign.com

 - Paper Clip Mk2 (file in .pdf format)

Designer: Frank Russel

Site: http://www.frankrusselldesign.com

 - Maximus Mk2 (files in .jpg format)

Designer: John Bartram

Site: http://smys.yolasite.com/plans.php

Marblehead Class

- Gothic-M (file in .pdf format)

Designer: Frank Russel

Site: http://www.frankrusselldesign.com

Ten Rater Class

 - IONA

Designer: Graham Bantock

Building tips: http://www.rciona.tk

Other

 - US 1 Meter class sailboats - Plans and a detailed and very useful construction guide (you should read it before starting to build any kind of sailboat). Pdf files.

 - One meter long sailboat - hull, keel, rudder, shadows, shadow section, rig.

 - XL25 - a 70 cm long sailboat. Plans and building guide.

http://www.sealevel.demon.nl/english/indexXL25modelyacht.htm 

 - Basic Jolle - a 70 cm long sailboat. Plans and building guide in German (we are lucky that the German to English online translation works fine!). http://www.modellbaurodenkirchen.de/Basic/BASIC.htm 

 - Luna Rossa, IL Moro di Venezia, Alinghi, VOR 70 and VOR 60 - IACC class (America's Cup) and Volvo Ocean Race sailboat plans.

 - Multihulls - three models (Mini 40/F48 class, 2M Class and 3M Class). http://water.resist.free.fr/

 - Ghost Train - a Mini 40 multihull designed by Andy McCulloch. Files in .dwg.