A more thorough explanation:

Definition: Touch and stay is a term used in marine insurance. It refers to the right given by an insurer to the insured to stop and remain at certain designated points during a voyage.

For example, a vessel may be given permission to touch and stay at a particular port to take on supplies or passengers. However, the vessel must strictly adhere to the terms of the permission given. Any deviation during the stay, such as shipping or landing goods, may discharge the underwriters unless the vessel has permission to trade as well as touch and stay.

Example: A cargo ship is traveling from New York to London. The insurer has given the ship's captain permission to touch and stay at the port of Halifax to take on additional fuel. The captain must ensure that the ship only stops at Halifax and does not engage in any other activities during the stay. If the ship were to deviate from the permission given and engage in other activities, the insurer may not cover any losses or damages that occur during that time.

Explanation: Touch and stay is a specific term used in marine insurance that allows a vessel to stop and remain at a designated point during a voyage. The example illustrates how a cargo ship can only engage in the activity it was given permission for during the stay. Any deviation from the permission given may result in the insurer not covering any losses or damages that occur during that time.