### Instruction: What is the minimum weight of a coswain?
### Input: It is an advantage for the coxswain to be light as this requires less effort for the crew to propel the boat. In many competitive events there is a minimum weight, 55 kilograms (121 lb) under World Rowing rules, set for the coxswain to prevent unfair advantage. If a coxswain is under the minimum weight allowance (underweight), they may have to carry weights in the boat such as sandbags.
### Response: The minimum weight of a coxswain if 55 kilograms (121 pounds) under World Rowing rules.