There are two modes of transportation from Linhai downtown to Chenda Island: one is by plane, and the other is by ship.
If you choose to fly, you can go to Chen Da Airport in Jiaojiang District, Taizhou, and then take a boat from the airport to Chenda Island. The voyage from Chen Da Airport to the ferry terminal is about 1.5 hours, while the ferry flight time from the ferry terminal to Chenda Island is relatively frequent, about every half hour, and the one-way voyage is about 1 hour. Therefore, if the traffic from Linhai City to Chenda Island is relatively smooth, the round trip can be completed within one day.
If you choose to take a boat, you can start from Baishuiyang Wharf in Linhai City or Jiangnan Wharf in Linhai City to the ferry wharf in Chenda Island. There are frequent ferry flights from Baishuiyang Wharf to Chenda Island, about every hour, and the one-way trip is about 1.5 hours. There are fewer ferry flights from Jiangnan Wharf to Chenda Island, about every two hours, and the one-way trip takes about 2 hours. Therefore, if you choose to go to Chenta Island by boat, you need to reserve enough time to complete the round trip in one day.
In short, if you plan your trip in advance and arrange your time reasonably, you can travel back and forth from Linhai City to Chenta Island in one day.