NavList:

NavList followers who wish to re-live historical sea battles may not be aware that most of the paintings, prints, pamphlets and other paraphernalia on these topics in the collection of Rijksmuseum Amsterdam are freely available in high-resolution scans at the Rijksstudio portal

  https://www.rijksmuseum.nl/en/rijksstudio

Although the above link leads to the English version of the Rijksstudio website, the search field actually performs poorly with English key words: entering “sea battle” results in only 4 hits while the Dutch equivalent “zeeslag” gives  more than 1250 hits.

As search terms you can also enter the names of battle sites or persons such as Camperduin (or Kamperduin), Trafalgar, Chattam, Horatio Nelson, etc.

You can also search for nautical instruments or historical sea charts.

Most of the material is of course in the Dutch language, giving you a nice opportunity to improve your knowledge of this beautiful language, but there are also many items in English or in French.

Bear in mind that most Rijksmuseum catalogers have a degree in history or art-history and are often unaware that octants and sextants are different instruments.

Have fun,

Rob van Gent