Example $2($Increasing ship's speed$)$

When you were on watch duty underway at ship's speed $10$knot, the chief engineer instructed you to

increase ship's speed until $15$ knot. Find how much revolution of propeller $($ME$)$ you need and anticipated

values of other running parameters as follow. $($You may ignore propeller slip and the price of fuel oil is $10000$

TL$/$ton$.$ Round calculation results off to two decimal places.$)$

ME: Main engine