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Responding to ships in distress

Napa recently launched a new software application – NAPA Emergency Response (NAPA ER) – to meet the needs of land-based ship emergency support teams. Based on the NAPA ship design package, NAPA ER integrates multiple functions into a single, highly intuitive graphical user interface.

Efficient, fast decision-making and timely countermeasures are essential when dealing with situations where a ship is damaged in a collision or goes aground and loses sea­worthiness, stability, or structural strength – to minimise the risk of loss of life, damage to the vessel, and environmental pollution.

NAPA ER has been designed to help guarantee just this, by providing a rapid and accurate assessment of a ship’s current status in terms of parameters such as stability, longitudinal strength, floating position, and the likely impact of the tide and possible oil spills. This data is invaluable in evaluating the risks associated with possible salvage operations and recommending the best course of action.

NAPA ER

Major benefits

The fact that NAPA ER is based on the same robust calculation engine used in the NAPA ship design system, employed by most of the world’s leading shipbuilders and by classification societies, gives the software unrivalled potential for evaluating ship stability. It is also fully compatible with the Onboard-NAPA loading calculator in use on board hundreds of ships.

As both Onboard-NAPA and NAPA ER utilise the same 3D product model, a ship’s initial loading condition can be imported directly from Onboard-NAPA and used by NAPA ER as the basis for calculating different scenarios following an accident.

NAPA ER provides invaluable support for shore-based technical support teams when responding to an accident, and also serves as an event log for storing information on measures that have been taken and changes in a ship’s status, which can be used both during an accident and in follow-up studies.

Primarily developed for organisations involved in emergency response and salvage work – such as classification societies, salvage companies, shipowners and operators, the authorities, and specialist consultants – NAPA ER is also an excellent tool for ‘browsing’ computerised ship models and examining ships’ stability and strength in general, for training purposes, and for ship designers interested in studying ship behaviour.

Next version in the pipeline

The first prototype of NAPA ER was developed in early 2004, and the first commercial version was released in 2005, incorporating feedback from major classification societies and Napa’s own experience with the software. Future plans for NAPA ER include building in functions for calculating residual strength, for example, based on the extent of structural damage, and time domain calculation for evaluating loading and flooding conditions.

> Saara Palm
(Published in High Technology Finland )