Carrying mails by boat (Bangladesh 1983)

Stamp Carrying mails by boat it reflects the thematic directions:

The Casco Bay Mailboat is a sailing vessel, run by Casco Bay Lines, which delivers mail and other items to the residents of the islands of Casco Bay in Maine, United States. It is the longest-running mailboat service in the country, having been in existence since the 1870s. Up until the 1950s, the boat was coal-powered; now it runs on a diesel engine.

The mail or post is a system for physically transporting documents and other small packages; or, the postcards, letters, and parcels themselves. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century national postal systems have generally been established as government monopolies with a fee on the article prepaid. Proof of payment is often in the form of adhesive postage stamps, but postage meters are also used for bulk mailing. Modern private postal systems are typically distinguished from national postal agencies by the names "courier" or "delivery service". Postal authorities often have functions other than transporting letters. In some countries, a postal, telegraph and telephone (PTT) service oversees the postal system, in addition to telephone and telegraph systems. Some countries' postal systems allow for savings accounts and handle applications for passports.