A white and orange ring-shaped lifebuoy
⭕, it is a life-saving equipment which can provide buoyancy and prevent drowning. This is a new emoji belongs to Emoji 14.0 which released in September 2021.
🛟 generally means buoy, and can also be used in topics like rescue activities, swimming, water
🌊, cruise
🛳, safety, etc. Lifebuoy is essential for people who can't swim, and is also commonly used on boats
🚢. It is not the same as a swimming ring, which is generally used for water recreational activities. Related emojis:
⛴🚢
⚓🏊🚣🏄