GUALENI P.

Ensuring a widely safe operational profile of naval vessels is one of the leading aspects of the design process. With reference to weather conditions, this kind of vessels often cannot avoid heavy situations to guarantee the continuity and the effectiveness of service. For this reason, an applied research investigation aimed to define guidance...

The focus of the present paper is the development of a resilience framework suitable to be applied in assessing the safety of ship LNG (Liquefied Natural Gas) bunkering process. Ship propulsion considering LNG as a possible fuel (with dual fuel marine engines installed on board) has favored important discussions about the LNG supply chain and...

One year later the finalization of Second Generation Intact Stability criteria (SGISc), there is still the need to validate the robustness and consistency of these criteria as indicated by IMO. Not compliance with a stability criterion cannot be always fixed acting only on the vessel design; also operative considerations are needed in order to...

Despite the recognized complexity to estimate the damping influence on ship roll motion, some efficient semi-empirical methodologies have been developed along the years to this purpose. CFD methods, in principle the most appropriate tools to predict roll damping, are not a favorite option in preliminary design at present due to their...

When dealing with maintenance in the ship's engine room, the space available around machinery and systems plays an important role. A proper clearance is usually indicated by the system supplier to perform maintenance operations. This space depends on the items dimensions, the kind of intervention and on the human operator, to avoid...

Ships are among the most complex systems in the world. The always increasing interest in environmental aspects, the evolution of technologies and the introduction of new rule constraints in the maritime field have compelled the innovation of the ship design approach. At an early design stage, there is the need to compare different design...

Seakeeping time domain simulations are carried out to capture the likelihood of a surf-riding and/or broaching event, with the aim to gain a further insight into the ship performance in stern quartering seas. The applied numerical tool, named PANSHIP, is a 6-DoFs time domain seakeeping software based on panel method, combined with semi...

In the present paper, a methodological framework to move from risk assessment to resilience assessment is described. In order to demonstrate the practical capability of the outlined methodology reference is made to a LNG (Liquefied Natural Gas) bunker activity for a cruise ship. The focal point to assess the resilience of a system is the...

This work proposes a method to model, predict and simulate shipboard electric load power profiles for specific users in order to overcomes the limitations encountered with traditional methods applied at the design phase of the ship. A probabilistic characterization of the user's operating modes is proposed combined with a stochastic process...