Able seaman/ training cargo surveyor

Hello good day..

Im 30 years old, seaman for almost 7 years and my current position is able bodied seaman and my current company is minerva marine agency inc. And its greek company.

I dont have experience as a surveyor, my senior officer though me how to compute the cargo everytime we finished loading thats why i have idea on how to calculate the cargo but if you are given me the chance i will do my very best to do my duties and responsibilities.. im still on board the ship and my availability is may 2016

Thank you for your time. God bless us all.