Ship Damage Control Research Articles

Triple V Product Development Framework and Its Interoperability between Product, Model and Data Lifecycles

Abstract In order to reduce the time and cost of verification, validation and accreditation (VV&A), increase the probability that design will succeed at one time, the traditional product development framework and methodology, which is usually described as the V framework, is extended through the double V framework to the model and data based triple V framework. The new framework provides an opportunity to converge data lifecycle, model lifecycle and product (development) lifecycle together. The paper analyses the interoperability of proposed triple V framework and implements it in a ship damage control system development project.

Design of Software and Hardware of Analog Display Board Based on RS485 Communication

As an important human-machine interaction component in the ship damage control system, the analog display board has a large number of indicator lights arranged on the board. But meanwhile, the indicator lights are in different working states and need to be controlled by multiple driving circuit boards. Thus, the application of RS485 bus communication can effectively solve the problem of communication between the controller side and multiple driving circuit boards. And the multiplexing of output ports on each driving circuit board will be regarded as a pragmatic approach to solve the numerous indicator lights that are in different working states on the board.

A Virtual Environment for Decision Support in Ship Damage Control

Safety is one of the main concerns in maritime activity. Although the safety of a ship may be determined by many uncontrollable factors (such as weather or human error), efficient and continuous monitoring of shipboard systems and the current safety status is crucial to avoid or at least minimize the effects. Most modern ships have a Damage Control Center onboard where the crew monitors ship systems and structures and coordinates emergency teams. The Damage Control Center has information about the compartments, tanks and ducts arrangements, stability diagrams, evacuation plans, and so on. The paper describes that the virtual ship is a virtual environment that supports emergency planning decisions in a ship's Damage Control Center. The model considers what could occur when fluids disseminate through a ship's compartments, such as flooding, fire, or contamination.

Qualitative simulation of temporal concurrent processes using Time Interval Petri Nets

This paper presents a formalism called Time Interval Petri Nets (TIPNs), which are designed to support a qualitative simulation of temporal concurrent processes. One of the key features of TIPNs is a uniform use of time intervals throughout the model. This enables a natural and efficient representation of temporal uncertainty in inputs, outputs, and intermediate states of the qualitative simulation. This is required because the exact time of key events, such as the start time of a fire crisis, is typically not known with certainty. Likewise, output conclusions of the qualitative simulation include earliest time and guaranteed time of key events that can be used by a decision maker to select the most appropriate action. Results are described of a TIPN-based qualitative simulator constructed in the domain of ship damage control. The simulator was created to replace an existing quantitative simulator which was too slow to support envisionment-based real-time decision making in this domain. The experimental results showed a speedup of four to five orders of magnitude which enables hyper-real time qualitative prediction of consequences of multiple competing actions. An automated shipboard damage control decision-making system incorporating a TIPN-based qualitative simulator achieved a 318% improvement over human subject matter experts in a large-scale simulated exercise of over 500 scenarios.

Integration of Ship Control Systems for Total Ship Survivability

ABSTRACTEffective damage control in naval ships has always been an important element of the naval combat equation. After receipt of battle damage, the ship's offensive operational capability depends upon its ability to support or restore vital systems. This in turn depends on the degree of initial damage, the damage control readiness condition of the ship, and effectiveness of the crew in applying the ship's damage control doctrine. In addition to conventional shell, mine, and torpedo threats, the speed and lethality of modern weapon systems presents an increased requirement for damage control readiness. New technology for the monitoring and control of the ship's hull, mechanical, electrical, and damage control (HME&DC) systems is now available with the potential for improving damage control readiness and for aiding the ship's commander in executing his damage control doctrine. This paper will describe the evolution of ship control systems, and discuss the application of current ship control systems technologies to damage control. It will recommend an optimum approach to meeting the requirements of damage control readiness posed by modern day threats, working within the U.S. Navy concept called Total Ship Survivability (TSS).

AUTOMATED CONTINGENCY PLANNING IN SUPPORT OF SHIPBOARD DAMAGE CONTROL

ABSTRACTShipboard damage control is almost totally reliant upon manual means for information processing and suffers from additional problems involving an ad hoc approach to casualty control, the need to condense highly specific useful information from general documentation (e.g., fire boundaries), and the variety, complexity and sometimes unavailability of required information (e.g., booklets of general plans which open out to the size of a large table; isometric diagrams each with their own sets of symbology; electrical distribution data contained on hundreds of aperture cards). A prototype computer system called SNIPE (Standard Naval Information Program — Engineering) was installed aboard USS Peterson (DD‐969) in April 1985 using an IBM micro‐processor. SNIPE uses contingency planning concepts to define the fire doctrine for every space on the ship. Thus, when a fire location is entered into the computer, SNIPE advises the ship's damage control personnel of the following predetermined information: the closest fire‐fighting equipment, fire boundaries to set, nearby hazards (e.g., magazines), vent systems and closures to secure, other spaces served by common vent systems to be checked, and electrical circuits to be secured. Computer disk “pre‐positioned” messages directing repair party action can also be printed for any of the above actions, speeding up the damage control central message output process. This paper describes the firefighting system in use aboard USS Peterson, the day‐to‐day readiness monitoring capabilities of the system, and some of the planned future enhancements.

Computerized Damage Control Books

ABSTRACTThis paper describes the method adopted by the U.S. Coast Guard by which Damage Control Books are revised using a text‐editing computer program. By recalling the stored text, making required changes through a terminal located at the U.S. Coast Guard Headquarters, then printing the entire updated book, a new master text is quickly prepared. The master is reproduced and revised copies are ready for distribution in a matter of days. The ship is therefore provided with a new corrected text at regular frequent intervals rather than one that contains many written corrections. In addition, the computer also prints out the Compartment Check‐Off Lists for the ship, corrected to the latest revision of the ship's Damage Control Book.This new system brings us a giant step closer to the ultimate goal of having aboard each ship accurate up‐to‐date Damage Control Books and Compartment Check‐Off Lists.