Simple, just turn up at the training session of any one of the following teams and jump right in. Beginners are accepted any time and nationality of rowers are not limited to those corresponding to the team’s name. Try out a few teams until you find one whose teammates you can click with.
However, to prevent intense embarrassment to oneself, perhaps doing 100 pushups each day and practising on the rowing machine at the gym beforehand might help.
American Association of Singapore Dragon Boat Racing Team
http://www.aasingapore.com/programs/dragonboat.shtml
Australian Chamber of Commerce Singapore Dragon Boat Team
http://www.ozdragon.org/
British Chamber of Commerce Dragon Boat Team
http://www.britishdragonboat.com/
Canadian Dragon Boat Team Santa Fe
http://www.canadians.org.sg/dragonboat.htm
German Dragons Singapore
www.germandragonssingapore.org
Irish Dragon Boating Team
http://gaelicdragons.org/
Knock yourself out . . .