The International 14 remains a popular racing class, having acquired racks (for trapezing crews) and a gennaker since its original design. The Laser Standard, Laser Radial and Laser 4.7 are the variants of the Laser dinghy, a single-hander whose combination of simplicity, portability and performance has done much to advance dinghy racing and training. More modern dinghies like the Musto Skiff, Splash, RS600 and RS Vareo have also increased dinghy sailing participation around the UK. Two popular dinghies used in high school and college racing are the 420 and Flying Junior.