The Laser 4.7 is the perfect boat for small single handed sailors and youth sailors who want to get into Laser sailing. The Laser 4.7 shares the same hull, blades, and deck fittings as the Laser and Radial, but has an alternative mast section and sail. The 4.7 is ideal for lightweight sailors, (75-120lbs). All you need is a new lower mast section and sail to make a Laser or Radial out of your 4.7.