Final answer:
The SOLAS lifejacket is a personal flotation device that comes in two sizes, one for adults and one for children, and is mandated on ships for safety. It is designed to keep individuals afloat in the water and must be correctly sized to work effectively.
Step-by-step explanation:
The subject of your question pertains to the SOLAS (Safety of Life at Sea) lifejacket, which is a type of personal flotation device. The SOLAS lifejacket is designed to help keep an individual afloat in the water, improving their chances of survival in case of an emergency at sea. These lifejackets are commonly required on ships and in offshore installations for safety purposes.
There are commonly two sizes available for SOLAS lifejackets: one suitable for adult use and one that is designed for children. The adult size is meant to fit the majority of grown individuals, while the child size is smaller and tailored to fit young passengers securely. It's important to choose the correct size for efficient performance and for the safety features to function properly in case of an emergency. Using the correct size ensures that the lifejacket will provide proper buoyancy and will not slip off during use.