This research describes the Study of a basic ship design and stealthy performance of a Defense Frigate Trimaran ship for the Comorian Coast Guard (CCG) as part of the Comoros government military asset. The Comoros island is located between Madagascar, Mozambique and Tanzania in the Mozambique canal. This research implies the importance of using ship System Integration of the Chinese frigates design. It also recommends expanding the machine gun Systems Integration domain in frigate procurement. The study is looking at current and future propulsion technology based on the mission need statement of the Union of Comoros. The automated process and ways of designing a Defense Frigate Trimaran (DFT) presented in this paper provides a rational and thorough methods to search a design space. The concept of the design represent the best basis for assessing technologies over a range of possibilities considering effectiveness, cost and risk. This automated approach and new tools are evaluated in the context of an Agile Surface Combatant Ship (ASC) and R/V Triton case study as mother ships. The Union of Comoros lacks modern high speed ships for the country's needs, due to the absence of adequate ships such as frigates, destroyers, and so on. This research is an opportunity and open door for not only the Union of Comoros, but for the Indian ocean countries to acquire sufficient vessel for protecting their seas, especially the eastern African countries. To fulfill the DFT designing research, computing software and calculations will be utilized for the ship resistance and hydrostatics calculations, up to the finishing project. The accomplishment of this research will allow the Comoros government to inter in the Naval ship design industry that will lead the CCG to acquire abilities of protecting the Comoros government sovereignty and economy. The selected DFT alternative is a low risk, low cost, knee-in-the-curve displacement multihull (trimaran) design on the cost-risk-effectiveness frontier. This design was chosen because it provides a sharp increase in effectiveness with a minimal increase in cost at a high endurance and at low risk level based on the calculation results. The emphasis of this paper is on the concept exploration design and requirements process

Keywords : Ship Design, Trimaran Frigate, Ship Resistance, Hydrostatics Calculations.