Complex sentence: Private investment and public infrastructure redevelopment commenced on a massive scale soon after the realisation of the influx of visitors arriving to watch the event plus 13 challenging syndicates from six countries and four defence syndicates arrived with a fleet of 29 12-Metre yachts.
Split into simpler sentences: Private investment and public infrastructure redevelopment commenced on a massive scale soon after the realisation of the influx of visitors arriving to watch the event. In all, 13 challenging syndicates from six countries and four defence syndicates arrived with a fleet of 29 12-Metre yachts.