FAQ: Which Was Olympic’s Fastest Crossing?

FAQ: Which was Olympic’s Fastest Crossing?

How do we define ‘fastest crossing’?  Part of the issue is that some sources seem to take it in terms of the time elapsed whereas others use the average speed.  Average speed is the most accurate from the point of view of measuring a ship’s performance, because otherwise a slower ship could complete a ‘faster’ crossing simply because she had covered fewer miles at a slower average speed.

There is no evidence she was ever driven all-out for the full duration of any of the 514 commercial crossings she completed during her career. (What Olympic‘s schedule allowed for was a reliable, steady performance.)  This is a contrast, for example, to Mauretania (highlighting in particular her attempt to regain the Blue Riband in 1929).  However, we do have limited information from Harold Sanderson, who took over the chairmanship of the White Star Line from J. Bruce Ismay, and who confirmed that the company’s records showed she had maintained an average speed of 24.2 knots for a 24 hour period in the Atlantic.  We have no further information as to the ship’s engine revolutions, state of loading or the weather conditions, but it is assumed that this would have been accomplished during ideal weather conditions on an eastbound crossing, when the current was typically in the ship’s favour.  (Sanderson provided this information in 1915, so it is also possible that Olympic performed better than this at a later date.)

A number of older sources have referred to two crossings Olympic made in 1921. On 31 October 1921 Olympic arrived in New York, having completed 2,931 miles in 5 days 12 hours and 39 minutes, averaging 22.10 knots. However, the eastbound return crossing was even faster: she covered 2,999 miles in 5 days 12 hours and 38 minutes, averaging 22.61 knots. These appear to be her shortest westbound and eastbound crossings (for the post-war period) in terms of the time elapsed but neither was her fastest crossing in either direction in terms of average speed.

At the time of writing, I have compiled a performance record which comprises available data on about 91.5 percent of the commercial voyages Olympic completed during her career. There are still a number of voyages missing in 1913 and 1914, in particular.  The available consolidated data for the 91.5 percent of these commercial voyages indicates that Olympic recorded an average speed of about 21.5 knots (including both westbound and eastbound crossings).  This data is taken from log abstracts for each individual voyage and/or records of the North Atlantic crossing times of the major liners, which Cunard maintained a continuous record of from 1917.

Westbound:  The fastest westbound crossing Olympic ever completed seems to have been that departing 30 June 1926.  She completed 3,195 miles in 6 days 12 minutes at an average speed of 22.16 knots.  (The ‘runner up’ is a crossing departing 9 May 1928, when she completed 3,160 miles in 5 days 22 hours 52 minutes at an average speed of 22.12 knots.)

Departure Date Distance Time Taken Average Speed
30 June 1926 3195 miles 6 days 0 hours 12 minutes 22.16 knots

Eastbound:  The fastest eastbound crossing Olympic ever completed seems to have been that departing 5 July 1924.  She completed 3,241 miles in 5 days 22 hours 47 minutes at an average speed of 22.70 knots.  However, a newspaper report in the Western Daily Mercury indicated that, on the eastbound crossing departing 6 July 1912, she completed 3,248 miles in 5 days 22 hours 15 minutes at an average speed of 22.83 knots. If that is correct (it has not been possible to verify it with a primary source) then that is the fastest eastbound crossing I am aware of currently.

Departure Date Distance Time Taken Average Speed
5 July 1924 3241 miles 5 days 22 hours 47 minutes 22.70 knots

 

Olympic was not designed to be the fastest liner afloat but she was certainly not a slow ship.  

 


 

FAQ: When Were The New Suites Forward on B-deck Added to Olympic?

FAQ: When Were The New Suites Forward on B-deck Added to Olympic?

Although it is popularly believed that they were added in 1928, at the same time as changes were made to second and tourist class areas, in fact there was not a single, major refit in 1928. Instead, some changes were made over the winter of 1927-28, and some over 1928-29. The new suites were added over the winter of 1928-29. By 1929, B-deck had become A-deck, however the original deck designation from 1911 is being used because readers will be more familiar with it. (See: ‘RMS Olympic: The Mis-dated Refit’.) 

 


 

FAQ: Was Titanic’s Starboard Propeller Used to Repair Olympic after the Hawke collision?

FAQ: Was Titanic’s Starboard Propeller Used to Repair Olympic after the Hawke collision?

 

No.

The available evidence indicates that Harland & Wolff used three spare blades as replacements for the three damaged blades on Olympic’s starboard propeller.

George Cuming, one of Harland & Wolff’s managing directors, was one of a number of professionals to see Olympic in drydock.  On 14 October 1911, he summarised the necessary repair work to an Engineer Commander, whose report went to the Director of Dockyards (on behalf of the Admiralty) some days later.

Olympic’s Starboard Propeller Blades

There was some good news: ‘There are no marks on the propeller blades of the centre and port shafts to show that these have been touched by anything at the time of collision’.  Unfortunately, the starboard propeller blades were all damaged:

The three blades have been removed; they are damaged towards the tips.  They are probably bent as well although this is not obvious.  Mr. Cummings’ [sic] proposal is to scrap these three blades, appropriate three spare and replace the spare blades used.  The blades are…manganese bronze.

Olympic’s Starboard Propeller Boss

The starboard propeller boss itself (the cylinder at the centre of the propeller to which the blades were attached) was ‘apparently undamaged’ but either of Titanic’s port or starboard propeller bosses were available to use as a replacement in the event that any damage to Olympic’s starboard propeller boss became apparent later.  (There is no evidence that it did.)  Harland & Wolff proposed to ‘anneal the studs for securing the blades, and if necessary, to renew them’.  (To ‘anneal’ meant to heat the material and then allow it to cool slowly, which made it easier to work.  In the event, it was necessary to renew at least some of them.)

Olympic’s Starboard Propeller Shafting

There was damage to Olympic’s propeller shafting, but Harland & Wolff did not think any bent shafting could be straightened out or repaired.  Instead, it would need to be replaced:

The tail shaft can be withdrawn into the dock and so removed to the shop, the three pieces forward of this necessitate that certain plates should be removed from the ship’s side so as to pass them out into the dock and so send into the shop.

Where the shafting passes through [watertight] bulkheads, the plating has had to be cut in order to uncouple and pass the shafting to be removed through the orifice being cut in the ship’s side.

It is not expected that these four lengths will be in the shop for another seven or eight days, and so the renewal necessary as regards them is unknown. As a precautionary measure a forging has been ordered for one length of shafting. The shafting is hollow and Messrs. Harland & Wolff do not consider that if any length is bent it can be made serviceable by straightening.

The Titanic’s shafting is available if necessary but if used would entail considerable delay in that ship’s completion, as the engines are now being put into her.

While Olympic was in dry dock, Harland & Wolff took the opportunity to increase the pitch of her port propeller blades from 33 feet to 34 feet 6 inches.  The cost was accounted for separately to the repairs of the collision damage.  The new starboard propeller blades were undoubtedly set at the same pitch. 

 

Olympic Starboard Propeller 1929
Olympic in drydock for her annual overhaul, January 1929. (‘Rivet counters’ might notice that there are five rows of rivets around the top of the centre propeller aperture.  This is one of several easy ways to identify photos of Olympic which date from after her stern frame was replaced over the winter of 1925-26.  As built, there were only four rows of rivets in this location.) (White Star Magazine, 1929/Author’s collection)