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The JW Westcott II is a mail ship with its own zip code, delivering mail to moving ships on the Detroit River. Postcodes are used for delivery and marketing purposes. ZIP codes were introduced in 1943 and extended ZIP codes in 1983.

A mail ship called the JW Westcott II is used by the United States Postal Service and has its own zip code: 48222. The boat is used to deliver mail to other ships on the Detroit River and is the only floating post office in the world that delivers mail to moving ships. In 1895, the Floating Post Office began carrying mail to passing ships via rowboats, then upgraded to a 45-foot (14 m) vessel in 1949. All mail can be delivered to ship crews traveling on the Detroit River with the address “Vessel Name, Marine Post Office, Detroit, Michigan, 48222.”

More information on postcodes:

Postcodes are used by other delivery companies such as FedEx, United Parcel Service (UPS) and DHL.
Zip codes are used to collect geographic statistics in the United States, as well as marketing to provide data on purchasing patterns.
The United States Postal Service began using two-digit ZIP codes for large cities in 1943. In 1983, the Postal Service began using extended ZIP codes called “ZIP+4” to identify certain segments within the United States. general postcode area.




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