Hello, i$\text{'}$m studying about ship hydrodynamic, could you guys guide the step to solve this problem.

$1.$ A resistance is conducted on a model of a cargo ship whose characteristics are as follows:

LWL $=140$ m

B $=20$ m

T $=10$ m

CB $=0\mathrm{.}60$

S $=6,700$ m$2$

The model has a length on waterline of $4$ m$.$ It is tested in the bare hull $($no appendages$)$ condition in fresh water with temperature of $21$oC$.$ When towed at the model speed corresponding to the design ship speed of $16$ knots, the towing mass is measured at $5$ kg$.$

a$.$ Determine the scale ration, characteristics and speed of the model.

b$.$ Calculate the ship model total resistance coefficient and ship total resistance coefficient. Given the information as follows:

model, fresh water

ship, seawater

$\backslash$rho $=1000$ kg$/$m$3$

$\backslash$rho $=1025$ kg$/$m$3$

$\backslash$upsilon $=1\mathrm{.}004$ x $10-6$ m$2/$s

$\backslash$upsilon $=1\mathrm{.}05\backslash$times $106$ m$2/$ s

Correction allowance CA $=0\mathrm{.}10$ x $10-3$

c$.$ Determine the bare hull effective power in standard sea water $(21$oC$)$ at design speed.

d$.$Determine the power to be added to overcome appendage resistance $($estimated to be $7$ percent of bare hull resistance$)$ and still air resistance if Sair$=7,700$ ft$2$ with air coefficient for a containership is Cair $=0\mathrm{.}90.$