06/20/2026
Titanic vs Olympic: what were the real physical differences?
In this Harland & Wolff photo, Olympic is on the left and Titanic is on the right. National Museums NI identifies the image as Olympic entering Thompson Graving Dock, with Titanic fitting out nearby.
The biggest mistake people make is comparing Titanic in 1912 with Olympic after later refits. Olympic changed several times after Titanic sank, so the date of the photo matters.
As completed, Olympic and Titanic were near-sisters, not exact clones.
The easiest visible difference was A Deck.
Olympic’s forward A Deck promenade was open.
Titanic’s forward A Deck promenade was partly enclosed with screens/windows. That is one of the strongest visual ways to identify Titanic in 1912.
The deeper difference was B Deck.
Olympic originally kept the long enclosed First-Class B Deck promenade.
Titanic’s B Deck was redesigned. Much of that promenade space was replaced with larger First-Class suites, private promenade suites, an expanded À La Carte Restaurant, and the Café Parisien.
That also changed the outside window pattern. Olympic’s B Deck windows looked more regular. Titanic’s B Deck window spacing was more broken up because the interior layout had changed.
Titanic was not meaningfully longer or wider than Olympic. Their basic hull dimensions were essentially the same: about 882 feet overall length and 92.5 feet beam.
Titanic’s higher gross tonnage was not because she was a much bigger hull. Gross tonnage is enclosed volume, not weight. Titanic measured 46,328.57 gross tons, while Olympic was 45,323.82 gross tons as completed. The increase came mainly from Titanic’s extra enclosed First-Class accommodation on B Deck.
Another real difference was the center propeller. Current Harland & Wolff record-based research supports Olympic having a four-bladed center propeller in 1911, while Titanic was completed with a three-bladed center propeller.
The lifeboats were not a major difference when both ships were new. Titanic and Olympic originally had the same basic 20-boat arrangement. After Titanic sank, Olympic was refitted with many more boats and added davits, so later photos of Olympic can look very different.
The fourth funnel was not a full boiler smoke funnel, but it was not useless either. On the Olympic-class ships, the first three funnels handled the main boiler uptakes. The fourth funnel served ventilation and design purposes.
Structurally, Olympic and Titanic were very similar as built. Both had 15 transverse watertight bulkheads creating 16 compartments. After Titanic’s loss, Olympic received major safety changes, including more lifeboats, added davits, an inner skin in machinery spaces, and raised watertight subdivision in key areas.
So the short version is:
Olympic as built:
Open forward A Deck promenade.
Original enclosed B Deck promenade.
More regular B Deck window pattern.
Four-bladed center propeller in 1911.
20 lifeboats as originally fitted.
Titanic as completed:
Partly enclosed forward A Deck promenade.
B Deck redesigned for luxury suites and dining space.
More irregular B Deck window pattern.
Café Parisien from the start.
Larger À La Carte Restaurant.
Private promenade suites.
Three-bladed center propeller.
Higher gross tonnage because of enclosed volume, not a bigger hull.
The most important rule: always ask what year the Olympic photo is from. A pre-1913 Olympic photo and a post-1913 Olympic photo are not the same comparison.
