Seacliff
...that the Royal Navy operated a secret training and anti-submarine warfare base at Seacliff in Scotland during World War I?
...that the <a href="./Royal_Navy" id="mwAY0" rel="mw:WikiLink" title="Royal Navy">Royal Navy</a> operated a secret training and <a href="./Anti-submarine_warfare" id="mwAY4" rel="mw:WikiLink" title="Anti-submarine warfare">anti-submarine warfare</a> base at <b id="mwAY8"><a class="mw-redirect" href="./Seacliff,_Scotland" id="mwAZA" rel="mw:WikiLink" title="Seacliff, Scotland">Seacliff</a></b> in <a href="./Scotland" id="mwAZE" rel="mw:WikiLink" title="Scotland">Scotland</a> during <a href="./World_War_I" id="mwAZI" rel="mw:WikiLink" title="World War I">World War I</a>?