A $2-$ft outside diameter pipeline lying on a sand seabed moved during a hurricane event. Determine

the wave height for a $15-$s period wave needed to just move the concrete$-$coated steel pipe located in

$180$ ft of water. The current normal to the pipeline is assumed to be $0\mathrm{.}8$ kts$.$ Use linear wave theory.

Crude oil with a specifi c gravity of $0\mathrm{.}86$ is inside the pipeline. The thickness of the steel pipe is $0\mathrm{.}25$

in and the thickness of the concrete coating is $1$ in

the way it was done above is incorrect and resulted in wrong values