I think C Robin has a good point. Lives were lost on the coast of Somalia, which is a lot further from the epicentre than DG, but presumably the former has a continental shelf over which the waves built up height.
I used to enjoy the occasional stopover at Gan. Snorkelling in the lagoon was good fun. I'm not sure that the guys who did a years' unaccompanied tour there were so keen on it.
Although there were no MQ and no women stationed on Gan, there is a story that some enterprising erk was found on an MI to have caught a dose. Under gruelling cross-examination it seems that a passing VC10 full of wives, NAAFI girls etc had stopped for an ahour or two due to unserviceability, and one of them couldn't shed her knickers fast enough for our hero. "The wages of sin..."