... and surface erosion. Therefore, a preliminary check is advisable before consulting a propeller designer or naval architect for further assistance. A simple method for making a first estimate ... nozzle and high pressure on the outside. The tapered form of the nozzle helps to balance these forces into a net forward thrust, which can account for as much as 40 percent of the total thrust from ... gasoline/oil mixture for starting and stopping and is, therefore, a bi-fuel motor. Kerosene INTRODUCTION Small boats,lessthan12 minlength,are notusedinmostcountriestofishoffshore for largepelagicspecies.ThatwasthecaseinShriLankatoo,upto...