1825 he entered the Royal Naval College at Portsmouth, and on passing out in December 1826 was shortly afterwards appointed to the Thetis, a 46-gun frigate, going out to the South American station. He was still in the Thetis when she was wrecked on Cape Frio on 5 Dec. 1830. It was Mends's watch at the time the ship struck, but as the night was dark and thick and it was raining heavily, he was held guiltless, the blame falling entirely on the captain and master. Mends wad considered to have behaved very well in a position extremely difficult for one so young and inexperienced, and several of the members of the court offered to take him with them. After passing his examination he joined the Actaeon in the Mediterranean, which in 1832 was at Constantinople when a Russian army of upwards of twenty thousand men was there, consequent on the terrible defeat of the Turks by Ibrahim Pasha at Konieh. The intervention of the western powers demanded the withdrawal of this force, and Mends was deeply interested in watching its embarkation, making careful notes of their manner and methods of embarking the cavalry and guns. Men, horses, and guns, with all their stores and baggage, were got on board within twelve hours, and Mends treasured up the experience for future use. In the summer of 1834 the Actaeon returned to England and was paid off; and in January 1835 Mends was appointed to the Pique with Captain Henry John Rous [q. v.] In July the ship was sent out to Canada, and on the homeward voyage, on 22 Sept., struck heavily on a reef off the coast of Labrador. After several anxious hours she was got off, and, though she was much damaged and was leaking badly, and her main and mizen masts were badly sprung, Rous determined to proceed. Five days later her rudder, which had also been injured, was carried away, and the ship left helpless in a heavy westerly gale. With admirable seamanship she was steered for several days by means of a weighted hemp cable towed astern and controlled by a spar lashed across the ship's stern: it was not till 6 Oct. that they were able to ship a jury rudder ; and on the 13th they anchored at St. Helen's after a voyage that has no parallel in the annals of the nineteenth century. Mends then learnt that he had been promoted to the rank of lieutenant on 11 Aug.
In December he was sent out to join the Vernon at Malta. A year later he was moved into the Caledonia and then to the Rodney, from which, in July 1838, he went to be flag-lieutenant of Sir John Louis, the second in command on the station and superintendent of Malta dockyard. He continued with Louis, sometimes afloat, but mostly at Malta, till July 1843 ; afterwards, from November 1843 he was in the Fox frigate with Sir Henry Blackwood on the coast of Ireland and in the East Indies till, on 2 Jan. 1847, he received the news of his promotion, on 9 Nov. 1846, to be commander. In January 1848 he was appointed to the Vanguard, in which, a couple of months later, he had the misfortune to lose some of the fingers of his left hand, which was carried into a block and badly crushed. It was this, more than the loss of the fingers, which caused trouble; and for years afterwards he suffered from severe attacks of neuralgia. The Vanguard went home and was paid off in March 1849 ; and in July 1850 Mends was appointed to the Vengeance, again with Black wood, who, however, died after a short illness at Portsmouth on 7 Jan. 1851, and was succeeded by Lord Edward Russell [q. v.] Towards the end of the summer the Vengeance went to the Mediterranean, but came home in December 1862, when, on 10 Dec., Mends was advanced to post rank in acknowledgment of the excellent order the ship was in.
In October 1853 he was selected by Sir Edmund (afterwards Lord) Lyons [q. v.] to be his flag-captain in the. Mediterranean, if Captain Symonds, then in the Arethusa, should prefer to remain in the frigate. If Symonds should prefer to join Lyons, it was understood that Mends should have the Arethusa [see Symonds, Sir Thomas Matthew Charles], Mends accordingly took the Agamemnon out and joined the fleet in the Sea of Marmora on Christmas Eve, when, as previously arranged, he took command of the Arethusa. In her he took a particularly brilliant part in the bombardment of Odessa on 22 April 1854 ; 'we stood in twice,' Mends, wrote, 'tacked close off the Mole and engaged the works on it in reverse . . . pouring in a destructive fire as we went about.' He was promptly recalled by the commander-in-chief, who seems to have considered that he was needlessly risking the ship. 'I expected a reprimand when I went on board the admiral to report, but the enthusiasm of the fleet and the cheers given to us as we passed along the lines mollified the chief, and I was simply told not to go in again.' The French officers who had witnessed the manoeuvre called on Mends to compliment him on it ; and many years afterwards a French writer in the 'Revue des Deux Mondes' referred to it as a brilliant tour de force. In June Lyons and Symonds had found that they did not get on well together, and it was proposed to Mends to re-exchange into the Agamem-
