Earlier this week the
Navy Records Society launched their new web portal
Navy Records Online, an online archive of miscellaneous British naval records including charts, portraits, cartoons, logs, letters, diaries, battle plans, sketchbooks, photograph albums and videos. Unfortunately the archive is locked behind a paywall, though at £20 per anumm it costs considerably less than full membership of the Navy Records Society. Full members allegedly get access to both the NRS and Navy Records Online but I haven't managed to get my NRS login to work with the online archive yet. I'll contact their webmaster and report back once I've got access.
www.navyrecordsonline.co.uk