![Reichsmarine on Twitter: "From the 16th to 19th century period, the true master of the sea was the Man-'o-'War ship. A line of battleship first developed in Portugal in the 15th century. Reichsmarine on Twitter: "From the 16th to 19th century period, the true master of the sea was the Man-'o-'War ship. A line of battleship first developed in Portugal in the 15th century.](https://pbs.twimg.com/media/FRpmRH9UYAAhoey.jpg)
Reichsmarine on Twitter: "From the 16th to 19th century period, the true master of the sea was the Man-'o-'War ship. A line of battleship first developed in Portugal in the 15th century.
![Dion Pears (British 1829-1985): French and British Men O' War, oil on canvas signed 70cm x 90cm - Affordable Art Dion Pears (British 1829-1985): French and British Men O' War, oil on canvas signed 70cm x 90cm - Affordable Art](https://www.davidduggleby.com/files/images/auctions/GUID/7d85368e-debf-4fec-8076-a4665f7c6276.jpg)
Dion Pears (British 1829-1985): French and British Men O' War, oil on canvas signed 70cm x 90cm - Affordable Art
![Ship of the line, biggest and strongest naval sailing warship type, man-of- war battleship with Imperial Russian Navy Ensign and masthead pennant realistic vector illustration Stock Vector | Adobe Stock Ship of the line, biggest and strongest naval sailing warship type, man-of- war battleship with Imperial Russian Navy Ensign and masthead pennant realistic vector illustration Stock Vector | Adobe Stock](https://t4.ftcdn.net/jpg/01/58/39/51/360_F_158395158_XsyonIAE9brE5T6wpwJl6Tb2gsGWsGnG.jpg)