High Quality Content by WIKIPEDIA articles! HMS Severn was an Endymion-class frigate of the British Royal Navy, launched in 1813 as one of five heavy frigates built to match the powerful American frigates. The shortage of oak meant that she was built of "fir" (actually pine), which meant a considerably shortened lifespan. Nonetheless, the ship saw useful service, especially at the bombardment of Algiers in 1816, before being broken up in 1825.