This section is from the book "The Engineer's And Mechanic's Encyclopaedia", by Luke Hebert. Also available from Amazon: Engineer's And Mechanic's Encyclopaedia.
(In favour of No. I.)
Models tried. | United Weights of Vessel and Load. | Divisions in the Arms of Yoke when at 3 Miles per Hour. | Divisions in the Arms of Yoke when at 6 miles per hour. | Difference. | |||||
Flat Vessel & Coaster. | No. 1 and 2 | 192 lbs. | each. | No. 1, 48 | No. 2, 52 | 4 Divisions = 1/12 | No. 1, 50 | No. 2, 50 | None. |
ditto | 256 | " | " 46 | " 54 | 8 " = 1/6 | " 50 | " 50 | None. | |
ditto | 320 | " | " 47 | " 53 | 6 " = 1/8 | " 49 1/2 | " 50 1/2 | 1 Division = 2/99 | |
ditto | 392 | " | " 45 | " 55 | 10 " = 1/5 | " 49 | " 51 | 2 " = 1/24 | |
Flat Vessel & Schooner. | No. 1 and 3 | 192 | " | No. 1, 45 | No. 3, 55 | 10 " = 1/5 | No. 1, 50 | No. 3, 50 | None. |
ditto | 256 | " | " 43 | " 57 | 14 " = 1/3 | " 50 | " 50 | None. | |
ditto | 320 | " | " 44 | " 56 | 12 " = 1/4 | Uncertain. | |||
ditto | 392 | " | " 45 | " 55 | 10 " = 1/5 | No. 1, 49 | No. 3, 51 | 2 Divisions = 1/24 | |
Flat Vessel& Twin ditto. | No. 1 and 4 | 256 | " | No. 1, 50 | No. 4, 50 | None. | Uncertain. | ||
ditto | 320 | " | " 53 | " 47 | 6 Divisions = 1/8 | ditto | |||
ditto | 392 | " | " 52 | " 48 | 4 " = 1/12 | ditto | |||
ditto | " |
Models Compared. | Depth of Immersion in Inches. | Weight of Vessels with their Loads. | Difference. | |
Flat Vessel. No. 1 | 4.91 | 256 lbs. | 32 lbs. | No. 2 carries 1/8 more than No. 1. |
Coaster. No. 2 | 85 | 288 „ | ||
No. 1 | 6.083 | 320 „ | 72 lbs. | No. 2 carries 2/9 more than No. 1. |
No. 2 | 10.083 | 392 „ | ||
Flat Vessel. No. 1 | 4.17 | 192 „ | 42 lbs. | No. 3 carries 2/9 more than No. 1. |
Schooner. No. 3 | 8.41 | 234 „ | ||
No. 1 | 5.75 | 320 „ | 42 lbs. | No. 3 carries 2/15 more than No. 1. |
No. 8 | 10.25 | 362 „ | ||
Flat Vessel. No. 1 | 4.17 | 256 „ | 0 | No.3 difference at this rate of speed. |
Twin Vessel. No. 4 | 4. | 256 „ |
N.B. The depth of immersion entered above is that observed when the vessels were at rest, and which did not appear to alter when in motion.
Models Compared. | Depth of Immersion in Inches. | Weight of Vessels with their Loads. | Difference. | |
Flat Vessel. No. 1 | 4 2/12 | 192 lbs. | The draught of water noted in the column of immersions was that observed when the models were at rest previous to the commencement of each experiment ; the actual immersion during the experiment was considerably less, especially in the flatter vessels; but there were no means of ascertaining it precisely. | |
Coaster. No. 2 | 6 4/12 | 192 „ | ||
No. 1 | 4 11/12 | 256 „ | ||
No. 2 | 8 1/12 | 256 „ | ||
Flat Vessel. No. 1 | 4 2/12 | 192 „ | ||
Schooner. No. 3 | 7 9/12 | 192 „ | ||
No. 1 | 4 11/12 | 256 „ | ||
No. 3 | 9 2/12 | 256 „ | ||
Flat Vessel. No. 1 | 5 9/12 | 320 „ | ||
Twin Boat. No. 1 | 5 7/12 | 320 „ |
 
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