The Laser SB3 is a sporty, mainly used for racing sailboat for a crew of three to four people. The maximum crew weight is 270 kg.

The boat, an open keelboat was designed in 2002 by Tony Castro; built it from the company laser performance. The hull is manufactured in GRP sandwich construction, the mirror is open, the self-bailing cockpit. The keel consists of Epoxyschaum and polyester laminate with an insert made ​​of stainless steel and a keel bulb of lead. The mast is made ​​of aluminum and has two Salingpaare.

Since 2008 World Championships will take place in this class of boat.