EXAMPLES 



411 



following corresponding values of resistance and speed were experimentally 

 obtained : 



Taking / = "00935 (the unit of velocity being 1 knot), and assuming 

 eddy making resistance to form 8 per cent, of the whole, determine the 

 magnitude of the frictional, eddy, and wave-making resistances, and 

 express these as a percentage of the whole. 



Answer. 



(11) In the previous example, determine the energy actually absorbed 

 in propulsion, and assuming that 45 per cent, of the I.H.P. of the 

 engine is utilised, determine the I.H.P. at speeds of 4, 8, and 12 

 knots. 



Answer. 



(12) In the Merkara, length 360 feet; breadth 37 '2 feet; draught 16'25 ; 



