It is probable that Cook visited Norway and the Baltic Sea (even, perhaps, St. Petersburg in Russia) to obtain timber. He was also on board the Three Brothers when that ship was used to transport troops and horses back from the continent.Cook had been promoted to mate with high expectations of being offered his own command on one of Walker's ships when he resigned and joined the Royal Navy in 1755.
All the ships that Cook sailed on during this period were cats. Cats were small sturdy vessels capable of caarying large quantities of cargo (in most cases coal) and good in the shallow, coastal waters of the North Sea and the fickle weather conditions found there. They offered Cook a wonderful practical training to develop his seamanship and navigation skills.
The Government introduced a law requiring all ships to keep detailed muster rolls of their crews, which has enabled us to know most of the ships and passages that Cook sailed on. However, little is known of the specifications of those ships.
| Ship's Name | Type | Home port | Owner | Tonnage |
| Freelove | Collier | Whitby | Walker | 341 |
| Three Brothers | Collier / Transport | Whitby | Walker | |
| Mary | Trader | Whitby | Wilkinson | |
| Hopewell | Stockton | |||
| Three Brothers | Collier | Whitby | Walker | |
| Friendship | Collier | Whitby | Walker |
| Ship's Name | Built where | Built when | Master | Cook on board | Cook's position |
| Freelove | Yarmouth | 1746 | John Jefferson | 1747-48 | Apprentice |
| Three Brothers | Whitby | 1748 | John Walker / John Jefferson | 1748-49 | Apprentice / Seaman |
| Mary | William Gaskin | 1750 | Seaman | ||
| Hopewell | 1750 | Seaman | |||
| Three Brothers | Whitby | 1748 | Robert Watson | 1751-52 | Seaman |
| Friendship | RobertWatson / Richard Ellerton / John Swainston | 1752-55 | Seaman / Mate |
| Ship's Name | Type | No. Guns | Tonnage | Dimensions | Built where | by whom | when |
| Eagle | 4th rate | 58 | 1,124bm | 44.8 x 12.8 | Harwich | Barnard | 1745 |
| Falmouth | 4th rate | 50 | 1,052bm | 43.9 x 12.5 | Woolwich | Dockyard | 1752 |
| St. Albans | 4th rate | 60 | 1,191bm | 45.7 x 13.1 | Deptford | West | 1747 |
| Solebay | 6th rate | 24 | 442bm | 32.3 x 9.1 | Plymouth | Dockyard | 1742 |
| Pembroke | 4th rate | 60 | 1,247bm | 47.5 x 12.8 | Plymouth | Dockyard | 1757 |
| Northumberland | 3rd rate | 70 | 1,414bm | 48.8 x 13.7 | Plymouth | Dockyard | 1750 |
| Antelope | 4th rate | 54 | 853bm | 40.8 x 11.6 | Woolwich | Dockyard | 1741 |
| Tweed | 5th rate | 32 | 661bm | 39 x 10.4 | Hull | Blaydes | 1759 |
| Grenville | Schooner | 12 | 69bm | 16.8 x 5.2 | Massachusetts | 1763 | |
| Lark | 5th rate | 32 | 646bm | 38.7 x 10.4 | Rotherhithe | Bird | 1762 |
| Endeavour | Bark | 6 | 368bm | 29.7 x 8.9 | Whitby | Fishburn | 1764 |
| Resolution | Sloop | 12 | 462bm | 33.8 x 10.8 | Whitby | Fishburn | 1770 |
| Adventure | Sloop | 10 | 336bm | 29.7 x 8.7 | Whitby | Fishburn | 1770 |
| Discovery | Sloop | 299bm | 27.9 x 8.4 | Whitby | Langbourne | 1774 |
Notes:
1. The dimensions are length by width in metres.
2. In tonnage, bm means builder's measurement.
3. Type - the rate was related to the number of guns carried. The lower the rate, the
more guns.
Sources:
1. Lyon, David. The Navy sailing list: all the ships of the Royal Navy - built,
purchased and captured - 1688-1860. London: Conway Maritime Press, 1993.
2. Colledge, J.J. Ships of the Royal Navy. Volume . London: Greenhill
Books, 1987.
| Ship's Name | Previous Name(s) | Notes | Captain | Cook on board when | Cook's position |
| Eagle | Joseph Hamar / Hugh Palliser | 1755-57 | A.B. / Master's mate | ||
| Falmouth | 1756 | Passenger | |||
| St. Albans | 1756 | Passenger | |||
| Solebay | Robert Craig | 1757 | Master | ||
| Pembroke | John Simcoe / John Wheelock | 1757-59 | Master | ||
| Northumberland | William Adams / Nicholas Bateman | 1759-62 | Master | ||
| Antelope | rebuilt | Thomas Graves | 1763 | Passenger | |
| Tweed | Charles Douglas | 1763 | Surveyor | ||
| Grenville | Sally | purchased 1763 | James Cook | 1763-67 | Captain |
| Lark | Thompson | 1764 | Passenger | ||
| Endeavour | Earl of Pembroke | purchased 1768 | James Cook | 1768-71 | Captain |
| Resolution | Marquis of Granby / Drake | purchased 1771 | James Cook | 1772-75 | Captain |
| Adventure | Marquis of Rockingham / Raleigh | purchased 1771 | Tobias Furneaux | ||
| Discovery | Diligence | purchased 1774 | Charles Clerke |