Online resources
This page lists good sources about components that could be used on Shipbucket. Feel free to add to this list. Try to keep sources that focus on only one component on the page describing that component, this page is for more general sources. Do note that links to illegal copies of books will be removed.
Internet sources
NavWeaps is the leading site on naval weapons, especially guns.
The Big Book Of Warfare A big reference website with info on everything related to warfare, weapons and military technology.
US Navy Radio Communications - 1950s & 1960s
World War II ship camouflage measures of the United States Navy
NAaB a naval armor and ballistics program.
Ballistic Minitool is a very useful tool for calculating gun data
Gun Mount & Turret Catalog - US Navy
Naval History & Heritage Command image search - good for finding high-res photos of ships
SpringSharp, the infamous ship design tool
Books
Norman Friedman