Explain the method that would be suitable for long-term protection of a ship laidat port.

The long-term protection of a ship laid at port involves several steps:

1. Cleaning: The first step is to thoroughly clean the ship. This includes removing any dirt, rust, or marine growth that may have accumulated on the ship's hull. This can be done using high-pressure water jets or abrasive blasting.

2. Inspection: After cleaning, the ship should be inspected for any signs of damage or corrosion. Any damaged areas should be repaired before proceeding with further protection measures.

3. Coating: The next step is to apply a protective coating to the ship's hull. This is typically a type of paint that is designed to resist the harsh marine environment. The coating should be applied evenly and thoroughly to ensure complete coverage.

4. Anodes: To protect the ship from galvanic corrosion, sacrificial anodes should be installed. These are pieces of metal that are more reactive than the ship's hull material, so they will corrode first, protecting the hull.

5. Maintenance: Regular maintenance checks should be carried out to ensure the protective measures are still effective. This includes checking the condition of the coating and anodes, and making any necessary repairs or replacements.

6. Dry Docking: Periodically, the ship should be dry docked for thorough inspection and maintenance. This allows for any necessary repairs to be made and for the protective measures to be reapplied if necessary.

By following these steps, a ship can be effectively protected for long-term storage at port.