242 



On Loio Steam Poiver to Vessels^ instead of Sails. 



[Oct. 



Expence of working steamer as above. 

 Add for loss of tonnage 



£ 



2320 

 220 



Expence of sailing vessel 



2540 

 2150 



Net increase of expence in steaming, 



£390 



or not 



Hence it appears that at an increased expence of less than -^j a loss 

 which there can be little doubt would be far more than compensated by 

 the additional passengers, and other advantages hereafter enumerated, 

 vessels could by this means be worked at a speed increased from 3| 

 knots to 6| or in the proportion of 3 to 5, or a voyage which nov/ takes 

 CO days would be performed in 36. That is 



That a vessel of 380 tons, with a 50 horse engine, an d using light 

 sails in strong leading winds, would be worked as profitably at loO miles 

 a day, as a sailing vessel at 88 miles per day, or she would perforin her 

 voyages in |- of the time of a sailing vessel with far greater safety, cer- 

 tainty and comfort to all on board ; voyages ranging from 1000 to 4000 

 miles without taking in coal. 



The above calculations are made from the actual expences and voyages 

 of a fast sailing vessel, very profitably employed in the Indian seas. She 

 can take in coal at Calcutta, Madras, Bombay, Singapoor and Sydney, 

 and as she can obtain no freight on the return voyage from Sydney, she 

 could bring back a full cargo of coal, and deposit part of what she does 

 cot use at P. Essington or King George's Sound, according as she returns 

 by Torres Straits or C. Lewin, and part at Anjer, Singapoor or any 

 convenient port, as may best suit her. Or she could have coal 

 brought up by the numerous vessels sailing in ballast from Sydney 

 for India, at a modeiate cost. With a depot of coal at P. Essington, 

 King George's Sound and Anjer, she would never have to steam more 

 than about 2000 miles without taking in coal, and the average distance 

 without a fresh supply would not exceed 1800, while the calculations 

 allow an average of 2400 miles. 



It must also be remembered that the vessel used for comparison was 

 undoubtedly much above an average sailer, so that the gain of speed and 

 time by the use of steam would be certainly on an average greater than 

 the calculation given. 



