Q.Is there any booklet onboard in which windage area can be found for different drafts ?

Answer 2 Answers

Trim and Stability booklet.

You will find the Longitudinal area and not the transverse area however.

Bare in mind that the generated figure tends to be based on a simple computer model and does not account for the appendages. 

A practical way to get the areas is a simply by using pdf or a 3d model where you retrace area needed. This tends to be the most accurate way.

Ali Ergin

A manoeuvring booklet mentioning in VIQ 7 chapter 4.3 will be helpfull to determine windage area for different drafts.This is Solas requirements to prepare ship specific Manoeuvring booklet.