M.S. Iris [4] | 300 | 346 | 99 | 4,961
Twin screw H.M.S. Iris [5] | 300 | 439 | 82 | 5,309
------------------------------+-------+---------+----------+-------------
[Footnote 2: Estimated with a speed of 17.5 knots and 3,370
I.H.P.]
[Footnote 3: With the first propeller at the estimated speed of
17.5 knots and 7,000 I.H.P.]
[Footnote 4: With four bladed modified Griffith's on actual
trial.]
[Footnote 5: With two bladed modified Griffith's on actual trial.]
[Footnote 6: Constants obtained from first propeller calculated
from a speed of 18.5 knots and 7,500 I.H.P.
Area of propeller disk x speed of ship in knots. cubed
Disk constant = --------------------------------------------------
I.H.P.
Projected Projected area of propeller x speed of ships in knots. cubed
area = ------------------------------------------------------
of constants I.H.P.
Expanded area constants may be obtained and used in the same way.]
The discussion which followed was opened by Mr. Holt. He said that if
they were to have greater speed on the Atlantic, there was one point
which was not alluded to in the paper, and that was the total
abolition of cargo on board the great passenger steamers.
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