function [power] = DSD(L, U, k)
%
% PURPOSE: Compute the power required to propel a prolate spheriod through
% sea water.
%
% DATE:   11 May 2012
%
% INPUTS:   L - meters, Length.
%           U - m/sec, speed.
%           k - meters, surface roughness (sand grain diameter)
%
% CHANGELOG:  1) rsm; original.
%
%
% Assume a fineness ratio of 5.  First compute the volume and surface area:
%
  units;

  V = 4/3*pi * (L/5)^2 * L;
  
  S = 


  return
