The training of naval officers at Dartmouth dates from 1863, when the wooden hulk was moved from Portland and moored in the River Dart to serve as a base. In 1864, after an influx of new recruits, "Britannia" was supplemented by . Prior to this, a Royal Naval Academy (later Royal Naval College) had operated for more than a century from 1733 to 1837 at Portsmouth, a major naval installation. The original "Britannia" was replaced by the in 1869, which was renamed "Britannia."