Volvo Ocean Race 2011-2012 | Fleet to face Gibraltar’s tidal bottleneck By Glen Becker | November 6, 2011 - 9:52 am |November 6, 2011 Sailing Leave a comment Fascinating description of the complex currents in the Straits of Gibraltar. I’ve never heard of the ‘internal wave’ they mention being visible from satellites. Sounds like interesting sailing, let alone racing. I can’t imagine the challenge. Volvo Ocean Race 2011-2012 | Fleet to face Gibraltar’s tidal bottleneck.