#### Mark Chirnside

**Member**

More regarding the fastest crossing, just after this thread had nearly sunk out of view.

No stop at Plymouth. A chain of thought…;

Olympic once crossed in 5 days 13 hours 6 minutes from Ambrose to Cherbourg at 22.53 knots.

Therefore: 133.1 hours…22.53 knots…2,999 miles.

Therefore: 132.6 hours…22.61 knots…2,999 miles; or

It could be: 132.6 hours…22.70 knots…3,010 miles;

It could be: 132.6 hours…22.81 knots…3,025 miles;

It could be: 132.6 hours…23.00 knots…3,050 miles;

It could be: 132.6 hours…23.19 knots…3,075 miles;

It could be: 132.6 hours…23.33 knots…3,095 miles;

It could be: 132.6 hours…23.37 knots…3,100 miles;

It could be: 132.6 hours…23.75 knots…3,150 miles;

It could be: 132.6 hours…24.13 knots…3,200 miles.

Now then… The lowest mileage is about 2,999 miles; lowest speed 22.61 knots.

But at the other end: the highest is over 3,200 miles; highest speed 24.13 knots.

Assuming a mileage of between 3,025 and 3,095 miles (the latter accurate for the August 1929 crossing); then the speed will be between 22.81 knots and 23.33 knots… I should think this is roughly accurate…

A final note about Olympic's horsepower:

46,000 total according to contemp. publicity and newspapers...

50,000 registered horsepower...

'at least 55,000 horsepower' developed according to Edward Wilding...

59,000 horsepower according to report of Hawke collision, which seems to be accurate in other respects...

Best regards,

Mark.