Vessel | Lapland |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1909 - 1933 |
| White Star Line Service | 1914 - 1919 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 606 (length) x 70 (breadth) x 39 (depth) |
| Tonnage | 17,540 |
| Speed | 17 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to double screws |
| Details | Ex Red Star Line vessel |
Vessel | Laurentic (I) |
| Sister ships | Megantic |
| Built by | Harland and Wolff Belfast |
| Total Service | 1909 - 1917 |
| White Star Line Service | 1909 - 1917 |
| Demise | War loss |
| Dimensions (ft imperial) | 550 (length) x 67 (breadth) x 41 (depth) |
| Tonnage | 14,892 |
| Speed | 17 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Ex Dominion Line's S.S. Alberta. Mined, with the loss of 345 lives and 3 211 gold bars |
Vessel | Megantic |
| Sister ships | Laurentic (I) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1909 - 1933 |
| White Star Line Service | 1909 - 1933 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 550 (length) x 67 (breadth) x 41 (depth) |
| Tonnage | 14,878 |
| Speed | 16 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to triple screws |
| Details | Ex Dominion Line's S.S. Albany |
Vessel | Mobile |
| Sister ships | No sister ships |
| Built by | Blohm & Voss Hamburg |
| Total Service | 1909 - 1933 |
| White Star Line Service | 1920 - 1920 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 589 (length) x 65 (breadth) x 47 (depth) |
| Tonnage | 16,960 |
| Speed | 16 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to double screws |
| Details | Ex Hamburg American Line's S.S Cleveland and ex U. S. Transport vessel |
Vessel | Olympic |
| Sister ships | Titanic | Britannic (II) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1935 |
| White Star Line Service | 1911 - 1935 |
| Demise | Scrapped |
| Dimensions (ft imperial) | 850 (length) x 92 (breadth) x 59 (depth) |
| Tonnage | 45,324 |
| 46,358 [1913] | |
| 46,439 [1920] | |
| Speed | 21 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | The only one of the Olympic class to complete more than one commercial voyage. Served with distinction during WWI. The Old Reliable retired in 1935. |
Vessel | Titanic |
| Sister ships | Olympic | Britannic (II) |
| Built by | Harland and Wolff Belfast |
| Total Service | 1912 - 1912 |
| White Star Line Service | 1912 - 1912 |
| Demise | Accident |
| Dimensions (ft imperial) | 850 (length) x 92 (breadth) x 59 (depth) |
| Tonnage | 46,328 |
| Speed | 21 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Sank on maiden voyage with the loss of 1,523 lives. A mere 705 surivived |
Vessel | Britannic (II) |
| Sister ships | Olympic | Titanic |
| Built by | Harland and Wolff Belfast |
| Total Service | 1915 - 1916 |
| White Star Line Service | 1915 - 1916 |
| Demise | War loss |
| Dimensions (ft imperial) | 852 (length) x 94 (breadth) x 64 (depth) |
| Tonnage | 48,158 |
| Speed | 21 |
| Hull construction | Steel |
| Engine configuration | Combination engine(s) geared to triple screws |
| Details | Requisitioned as a hospital ship |
Vessel | Nomadic (II) |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1968 |
| White Star Line Service | 1911 - 1927 |
| Demise | Preserved |
| Dimensions (ft imperial) | 220 (length) x 37 (breadth) x 12 (depth) |
| Tonnage | 1,273 |
| Speed | 12 |
| Hull construction | Steel |
| Engine configuration | Compound engine(s) geared to double screws |
| Details | Tender built for the use of Olympic class at Cherbourg |
Vessel | Traffic (II) |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1941 |
| White Star Line Service | 1911 - 1927 |
| Demise | War loss |
| Dimensions (ft imperial) | 175 (length) x 35 (breadth) x 12 (depth) |
| Tonnage | 675 |
| Speed | 12 |
| Hull construction | Steel |
| Engine configuration | Compound engine(s) geared to double screws |
| Details | Same use as Nomadic. Vessel lost during German Naval service. |
Vessel | Zeelandic |
| Sister ships | No sister ships |
| Built by | Harland and Wolff Belfast |
| Total Service | 1911 - 1941 |
| White Star Line Service | 1911 - 1927 |
| Demise | War loss |
| Dimensions (ft imperial) | 477 (length) x 63 (breadth) x 31 (depth) |
| Tonnage | 8,090 |
| Speed | 13 |
| Hull construction | Steel |
| Engine configuration | Quadruple engine(s) geared to double screws |
| Details | Built for White Star/Shaw, Savill and Albion joint service. Lost after air and torpedo attack |