Olympic-class ocean liner so, the "Olympic"-class ships were built to surpass rival Cunard's largest ships, "Lusitania" and "Mauretania", in size and luxury. "Olympic", along with "Titanic" and the soon to be built "Britannic", were intended to be the largest and most luxurious ships to operate on the North Atlantic, but not the fastest, as the White Star Line had already switched from high speed to size and luxury. The three vessels were designed by Thomas Andrews and Alexander Carlisle. Construction of "Olympic" started in December 1908 and "Titanic" in March 1909. The two ships were built side by side. The construction of "Britannic"
Castle-class patrol vessel Castle-class patrol vessel The Castle class was a class of British offshore patrol vessels of the Royal Navy. Two ships were constructed. Both were transferred to the Bangladesh Navy in 2010. The Castle class was designed by David K. Brown and was intended as a series of six offshore patrol vessels for the Royal Navy, designed in response to criticism of the previous for insufficient speed, sub-optimal sea-keeping and lack of a flight deck for rescue helicopters. In the event, only two ships were built, and . Both vessels were built by Hall Russell in Aberdeen, Scotland. These had significant