Midship section problem from naval architect

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The discussion revolves around a naval architecture homework assignment focused on analyzing a midship section subjected to a hogging moment of 80,000 tm. Key tasks include determining the neutral axis location, sectional modulus, stress at the deck and bottom plates, and calculating the safety factor for yielding with a yield stress of 200 MPa. Additionally, the assignment prompts an exploration of the structural advantages of using angled sections at the top deck and a research component on hull failure modes and design practices to prevent them. The participant seeks assistance due to a decade-long gap in their education. This highlights the importance of foundational knowledge in naval architecture for effective problem-solving.
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Dear everyone,

Recently i attend a course and my homework in below. As I have leave school for ten years, lots of knowledge have forgotten, so pls help me resolve it. Sincerely thanks your help.

The midship section is subjected to a moment of Mxx = 80,000 tm Hogging. The idealized structural members contributing to the longitudinal strength of the hull girder are as shown in the figure below:
(a) Determine the location of the neutral axis NA
(b) Determine the sectional modulus of the midship section
(c) Determine the stress at the deck and bottom plates
(d) Determine the safety factor for yielding if the material yield stress is 200 MPa
(e) What are the structural advantages of using angled-section at the top deck?
(f) Search the internet for the likely hull failure modes. Write up your findings, in not more than 300 words, about the design practice to prevent these failure modes.
 

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