The Royal Naval Museum in Portsmouth has an archive of documents and photographs available for inspection by researchers. Their website has an online catalogue so that anyone wishing to visit can notify them of which records they want to access. Some items are available on demand at the search rooms whilst others are by appointment only. Therefore do your homework before you visit, good advice wherever you go to research.
The Museum’s mission is ‘to make accessible to all the story of the Royal Navy and its people from earliest times to the present’ so you can be assured of a warm welcome.
The website is well worth spending time exploring as there is some great information in the various areas.