http://www.hmsroyaloak.co.uk/

A website dedicated to the 833 men who lost their lives on HMS Royal Oak.

http://www.visitorkney.com/

Orkney's official tourism website.

http://www.nlb.org.uk/

The Northern Lighthouse Board.

http://www.nlb.org.uk/ourlights/orkney.html

A map showing Orkney's lighthouses.