Cook joined H.M.S.  Solebay on the 30th July 1757 at Leith, where she was then stationed, but the date of his warrant has not been ascertained, although the Public Records and Trinity House have both been searched for the purpose.  His stay was not long, for after a cruise of a few days she returned to Leith, and on 17th September Cook was superseded by John Nichols; in fact, his time on board was so short that his signature is not appended to any of the rolls.

In April 1757 Mr. Bissett, who was Master of the Eagle when Cook was Master’s mate, and who therefore would have a better chance than any one else to measure his subordinate’s character and capabilities, was appointed Master of H.M.S.  Pembroke, a new ship, and superintended her fitting for sea.  On 26th October he found himself transferred to the Stirling Castle, and it is only reasonable to suppose that, having formed a high opinion of Cook’s work, and knowing of his ambition to rise in the service, he would give information of the opportunity and, as far as he could, push forward his friend’s interests.  At any rate, the Muster Rolls show that in less than six weeks from leaving the Solebay, Cook was established on board the Pembroke as Master, under a warrant bearing date 18th October 1757, and entered upon his duties on 27th October, the twenty-ninth anniversary of his birth; and from that date to his discharge into the Northumberland he signed the usual documents.  At the time of his joining, the ship was fitting and victualling for sea at Portsmouth, and on 8th November she sailed for the Bay of Biscay, under the command of Captain Simcoe, returning to Plymouth on 9th February 1758.

Louisberg.

The British Government had decided on making a determined effort to wrest the Colony of New France from the hands of the French, and one of the few steps was to attempt the capture of the port of Louisburg, at the entrance to the Gulf of St. Lawrence; a place which the enemy were said to have rendered almost impregnable at an expenditure of some million and a quarter pounds.  They looked upon it as second only to Quebec in its importance to the safe keeping of the colony.  In order to carry out this design a fleet was prepared under Admiral Boscawen (known to his men as Old Dreadnought, and, from a peculiar carriage of the head, said to have been contracted from a youthful habit of imitating one of his father’s old servants, Wry-necked-Dick), to convey a small army under Major-General Amherst to the scene of action.  Boscawen sailed with his fleet, one member of which was the Pembroke, for Halifax, where they arrived, via Madeira and the Bermudas, on 8th May.