The choice of propulsion and thruster equipment for offshore service vessels is dependent on a nu... more The choice of propulsion and thruster equipment for offshore service vessels is dependent on a number of factors which the designer and operator must take into account when considering the construction or modification of a vessel. When Dynamic Positioning is included into the design these choices become considerably more complex. New technology has introduced new machinery control concepts which are having radical effects on traditional designs. This paper considers three different thruster, propulsion and power arrangements which have been introduced for OSVs, their integration into the DP System and areas of particular importance to the FMEA practitioner.
A well prepared and comprehensive Dynamic Positioning (DP) Failure Mode and Effect Analysis (FMEA... more A well prepared and comprehensive Dynamic Positioning (DP) Failure Mode and Effect Analysis (FMEA) is fundamental to proving DP redundancy and ensuring safe operation. The DP FMEA is generally the only document on board a ship that provides a general overview of the critical installed equipment and their interaction. As such, it provides a valuable resource for understanding vessel operation and safe position keeping. However, the thoroughness, accuracy and readability of most FMEAs leads them to be largely ignored by operational staff. The first DP FMEAs began to appear in the late 1980's although it was not until the 1990's that industry requirements began to make them mandatory. Since that time these documents have become increasingly sophisticated yet quality and formats vary considerably. Class Societies and industry bodies, such as IMCA and MTS, have responded to this by further detailing basic requirements but no defined standard exists that provides a reliable guide ...
Uploads
Papers by Russell Hodge