Kil class
... that the Royal Navy's Kil class gunboats were designed to confuse observers in U-boats with their dazzle camouflage and double-ended hulls?
... that the Royal Navy's <b id="mwA4c"><a class="mw-redirect" href="./Kil_class_sloop" id="mwA4g" rel="mw:WikiLink" title="Kil class sloop">Kil class</a></b> gunboats <i id="mwA4k">(pictured)</i> were designed to confuse observers in <a href="./U-boat" id="mwA4o" rel="mw:WikiLink" title="U-boat">U-boats</a> with their <a href="./Dazzle_camouflage" id="mwA4s" rel="mw:WikiLink" title="Dazzle camouflage">dazzle camouflage</a> and double-ended hulls?