With the exception of the first day's run, both vessels had closely matching day's runs for the second, third and fourth days.

At Noon on day 4, Titanic had 126 miles to run to The Corner while at Noon on day 4, Olympic had still another 174 miles to run.

Weather, tides and other natural influences might account for the minor differences but the most glaring difference was in the first day's run figures. Titanic travelled a total of 484 miles until Noon on day 2 while Olympic only managed a total of 428.. a difference of 56 miles. So why was that? Both ships were essentially the same and being treated the same way at that time by the owners and operators.

There is another anomaly with Olympic's total voyage time.

Her Voyage Card gives a total running time of 5 days,16 hours,42 minutes. This would include 5 hours clock adjustment time so that Olympic would arrive at New York and her clocks would show New York time.

According to the card, she passed Daunt Rock at 4-22pm on the afternoon of June 15th and arrived at Ambrose Light at 2-46am on June 21st. So how does 5 days, 16 hours 42 minutes fit between these start and finish times? If these were local mean times then the total run time without stopping should have been 5 days 15 hours 24 minutes - there's an hour and 22 minutes too much running time! Reasons for this would include head winds and current, deliberately reduced speed or a breakdown of some kind.

Perhaps the clue lies in the days' run figure comparison between the maiden voyages of Titanic and Olympic. The vessels were, very similar and started their maiden voyages in exactly the same way over more or less the same courses. Here are their day's run figures up to arrival at The Corner:

Titanic....Olympic

484 428

519 534

546 542

126 174

From these, it can be seen that there was something wrong with Olympic during the first 17 hours of her maiden voyage. Since the figures for the subsequent days do not vary too much from those of Titanic, it seems Olympic lost 56 miles between turning at Fastnet Rock and Noon the next day. Did she in fact stop for some time?

Another thing that became apparent:

At Noon on the day before arrival at The Corner - Titanic was as much as 7 miles to the south of the intended Great Circle track and Olympic 15 miles to the north of it.

The actual calculated Great Circle final course to The Corner was 236.5T. Titanic had to alter to 240.5T and Olympic to 232.5T