U.S. based
Billings Boats www.billingboats.com A well know Danish manufacturer of quality kits. Some are wood planked hulls, others are produced with plastic hulls. Their kits typically include an extensive selection of both plastic and beautiful brass fittings. Kits include the Calypso, tug boats, pleasure craft, and coast guard lifeboats.
Dumas - www.dumasproducts.com An American company that for many years has produced a line of RC model boats. Their kits include both traditional wood planked hulls as well as fiberglass molded hulls. They manufacture an extensive line of classic wood Chris Craft runabouts, a Mississippi paddle wheeler, a side paddle wheeler, a gunboat, pleasure boats, and tug boats.
Evan Designs – www.modeltrainsoftware.com – Great source for LED lighting for boats, listed under “Hobby LEDs”
Floating Drydock - www.floatingdrydock.com This company provide an extensive selection of ships plans, plan books, other publications, and fittings primarily for military models.
Harbor Models - www.harbormodels.com An extensive line of model boat kits, fittings, and accessories.
HobbyPartz – www.hobbypartz.com - General supplier of parts and equipment to the car, airplane and boating hobbies.
Horizon Hobby – www.horizonhobby.com – General supplier of parts and kits for the boating, car and airplane hobbies.
HR Products - www.hrprod.com A well known American manufacturer of fittings from cast metal available in many different scales.
Legend Model Boats – www.legendmodelboats.com –Sells a small number of highly detailed wood boat kits
Loyalhanna Dockyard - loyalhannadockyard.com - Model boat chandler with everything from kits and plans, to hard to find items
M.A.C.K Products - www.mackproductsrc.com/ - Owned by Richard Kroll (who also owns Legends Model Boats), this site gives access to one of the longest running companies devoted exclusively to model boating. Located in New Jersey!
Micro Mark – www.micromark.com – Specializing in tools and equipment for hobbyists (incl 3D printers). Located in New Jersey!
Midwest - www.midwestproducts.com -Used to sell kits. Now a good supplier of materials from balsa to carbon fiber
Model Expo - www.modelexpo-online.com - A long time distributor of all types of model boat related products they carry Midwest models as well as some non U.S. brands. They also have tools, fittings, building supplies, paint, and books.
Modelers Central - www.modelerscentral.com - Suppliers of historic wooden ship model kits, modeling tools, ship model plans, ship model fittings, decorations and modeling timbers. IMports form Amati, Corel, Dusek, Euromodel, Krick, Mamoli, Mantua, Modellers Shipyard, Occre, Soclaine, Turk Model and Victory Models.
Off Shore Electric – www.offshoreelectrics.com – Although focused largely on fast electric boats (most too fast for our pond!), they do carry lots of parts for electric boats in general.
Scale Shipyard- scaleshipyard.com An American manufacturer of fiberglass hulls with an extensive line of US Navy military ships. If you want to build a Navy ship on a pre-made hull this is the place to find it.
Tower Hobbies- www.towerhobbies.com A compressive provider of RC hobby supply. They carry Dumas, Midwest, Billings kits as well as various accessory items. They also carry RC radios, servers, battery chargers, batteries, linkage components, and building supplies.
Jim and Gin's Store-https://www.ebay.com/str/jimandginsstore Source for many types of model boat plans at reasonable cost.
International
Caldercraft- www.jotika-ltd.com An English company with a comprehensive line of high quality kits including work boats, steam boats and pleasure craft.
Krick - www.krickshop.de A German site (and great retail shop) with everything you will ever need. They bought some of the old Robbe assets.
Cornwall Model Boats - https://www.cornwallmodelboats.co.uk An English mail order company that has an extensive web site, and a broad selection of RC model boat kits, fittings, drive components, accessories, and books.
Something Different(ships in a Bottle)
https://www.bottlestore.com/aguidetobuildingyourfirstshipinabottle
Information on How to Build Model Boats
www.cruisedirect.com/ship_modeling_for_beginners