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When returning from sea a green navigational buoy should be kept to the port side of the vessel.

This is based on a world-wide color code that all vessels follow in order to facilitate the communication between vessels as well as between vessels and those on shore.

A green navigational buoy should be on the port side of the vessel in accordance with the worldwide color code of sea-navigating vessels.

What is sea navigation?

Sea navigation is the process or action by which a people move across the sea or travel on the sea using various means of transport such as boats and ships.

Sea navigation follows certain rules in order to ensure safety of lives and cargo or goods on the ship.

According to worldwide color code that all ships navigating on the sea abide by, when returning from sea a green navigational buoy should be on the port side of the vessel.

Learn more about sea navigation at: https://brainly.com/question/17019124