Manobrabilidade: componentes e elementos que influenciam na manobra do navio

Abstract

When studying the maneuverability of a vessel, the main scope is to analyze its ability to maintain a steady heading, as well as to measure its turning ability. Indirectly, these two assessments intent to evaluate the rudder efficiency. In order to develop a ship of high performance it is imperative to satisfy three basic requirements that should be dealt with in a single manner and oriented towards the ship's performance as a whole and its mission: propulsion, seakeeping and maneuverability. The propeller has great importance when it comes to maneuvering a ship. The mechanic efficiency of a propeller is measured through mathematical formulae. There are various factors that concur to the propeller's efficiency such as the blade angle of attack, or the angle between the resulting direction of the flow speed and the blade rotation direction. Vessels should present high performance in propulsion, be able to face adverse winds and waves and be comprised to deliver safety when navigating even when in turbulent seas. It is basal to understand the causes underlying ships’ movement so as to understand the ability that they have to execute certain maneuvers.