The method of administering the navy underwent successive modifications during the reign of King Charles. When he ascended the throne, Buckingham held the post of Lord High Admiral, and the work of administering the navy was done in his name by the members of the Commission of 1618. When Buckingham was stabbed in the passage of the little house in the High Street of Portsmouth, which he occupied as his headquarters in 1628, the king had recourse to a method of governing his navy curiously similar to the system now in use. He put the office of Lord High Admiral in Commission. The persons entrusted with the duty seem to have also discharged the work of the Navy Office. The military and the civil functions of the navy were, in fact, joined in the hands of the same body of persons, very much as is the case now. There was, however, one important difference. The Commissioners appointed by Charles also held other great offices. They were Jackson, Bishop of London, who was also Lord High Treasurer; the Earl of Lindsey, the Great Chamberlain; the Earl of Dorset, Chamberlain to the Queen; Lord Cottington, Chancellor of the Exchequer; the elder Sir Henry Vane, Comptroller of the King's Household; and the two Secretaries of State, Sir John Coke and Sir Francis Windebanke. This Commission, with certain changes in the persons, held office until 1638. Under this interregnum it was that the two naval demonstrations known as the Ship-money Fleets were fitted out in 1636 and 1637. The object was to make an effective assertion of the King of England's right to the sovereignty of the seas of Britain. They were to put a stop to all warlike operations on the part of Spaniards, Dutch, or French, to compel all fishermen to pay for a licence from the King of England, and in a general way to produce an effect both imposing and terrifying on the minds of all foreign rulers. The fleet of 1636 was perhaps in real power the greatest sent forth by a ruler of England. The command was given to Algernon Percy, tenth Earl of Northumberland, who succeeded the Earl of Lindsey on the Commission of the Navy. Northumberland was a magnificent specimen of a great noble. According to Clarendon, if he had thought the king as much above him as he thought himself above all other considerable men, he would have been a good subject. As it was, he was mainly a great noble who held himself apart, and who lived through a very stormy time without incurring any serious misfortune--a feat, perhaps, partly to be accounted for by the fact that at times of crises he was a little apt to follow the example of the young man who went away sorrowful because he had great possessions. As admiral commanding the Ship-money Fleets, Northumberland had little opportunity to render service. The utmost he could do was to extort the price of a licence from a few unlucky Dutch herring fishermen. The abuses of the navy attracted his attention, and he proposed a scheme for their reform.