The Sirius was a ship of about 540 tons burthen, exceedingly well calculated for such a service; she mounted 20 guns, and had a spar deck over them, was of a round full built, and was all together a very capacious and convenient vessel. The Supply armed tender was a brig, and was one of the vessels which were employed in carrying naval stores from one of his Majesty's dock-yards to another; she was a very firm strong little vessel, very flat floored, and roomy, mounted eight guns, and had a deep waist, which I feared would be found a very great, if not a dangerous inconvenience in so low a vessel on so long a voyage. The Sirius's compliment was 160 men; that of the Supply, 55 men. These two ships were intended, after having performed the service of escorting the convicts to the place of their destination, to remain in the country to be employed as the governor might find necessary for the public service, until they should be relieved by other ships from England. I had some reason, during the equipment of those ships, to think I might be employed upon this service, in some way or other; and as Captain Phillip was appointed governor of the new settlement, and of course had much business to transact in London, I frequently visited the Sirius, and frequently received his directions in any thing that related to the fitting her; she was out of the dock and the rigging in hand when I first went on board, On the 9th of December, the ship being ready to fall down the river, we slipped the moorings and sailed down to Long-Reach, where we took in the guns and ordnance stores. On the 15th, I was informed by a letter from Mr. Stephens, Secretary to the Admiralty, that there was a commission signed for me in that office, and desiring I would come to town and take it up. The nature of the service upon which the Sirius might be employed in those seas to which she was bound, having been considered, it was judged necessary that an officer, bearing a certain rank, should command that ship in the absence of Captain Phillip, whose prefence, it was to be supposed, would be requisite at all times wherever the seat of government in that country might be fixed. In consequence of Mr. Stephens's letter, I repaired to the Admiralty, and received a commission, appointing me Second Captain of his Majesty's ship Sirius, with the rank of Post Captain, and with power to command her in the absence of her principal Captain; subject nevertheless to his controul, and to such orders and directions for my proceedings as he might see occasion to give me, for the good of the service. This appointment of a Second Captain, to a private ship, being the first instance in our service, it could not, consistent with the established regulations of the navy, take place, but by the authority of the King's order in council: an order from his Majesty in council, authorizing the Lords of the Admiralty to make such appointment, was therefore given.