A ship is towing a sonar array that approximates a submerged cylinder 1 ft in diameter and 30 ft long with its axis normal to the direction of tow. If the tow speed is 12 kn (1 kn 1.69 ft/s), estimate the horsepower required to tow this cylinder. What will be the frequency of vortices shed from the cylinder? Use Figs. 5.2 and 5.3.
![1123_78ddbf4c-c9cc-440e-8444-8843099fbfe0.png](https://secure.tutorsglobe.com/CMSImages/1123_78ddbf4c-c9cc-440e-8444-8843099fbfe0.png)