Risers and anchor lines play important roles in offshore oil exploitation activities nowadays.
For this reason the proper analysis and design of such slender structures has been of a …

A Dynamic Positioning System (DPS) is a complex control system composed of several
algorithms, such as controllers, filters and optimal thrust allocation. The design, analysis and …

During the last decades, as oil production offshore Brazil moved to deeper waters, technical
and economical constraints led to a new generation of floating platforms. Nowadays, in the …

Many important offshore operations involve multiple vessels whose relative positions
change considerably in the course of the operational procedures. When the action of sea …

This work presents the calibration, based on results of ocean basin tests, of numerical
models of a deep-draft semi-submersible platform including mooring lines and risers. The …

Oil offloading from Spread Mooring System (SMS) FPSO is usually done by means of a
dynamically positioned shuttle tanker (DPST) in tandem configuration. The ST receives the …

The installations of sub-sea equipments are very complex operations, requiring previous
analysis in order to define the correct procedure and the environmental “window” for a safe …

This paper presents experimental results on tensions induced on a mooring line model by
harmonic motions imposed at its top. The results were obtained in towing-tank tests and …

The present paper addresses the development of a cooperative control applied to Ships with
Dynamic Position Systems (DP) under oil transfer operation. The objective of the …

The propose of this paper is to discuss the advantages obtained by the simulations of
offloading operations in the presence of waves, detailing the effects that arise when body's …