Failure to Float Twice The Costa Concordia MV
- Slides: 13
Failure to Float Twice: The Costa Concordia & MV Sewol Stacy Smith SYSM 6309 – Spring 2015
The Costa Concordia
The MV Sewol
Listing : A Brief Lesson
Costa Concord ia Both Ships MV Sewol January 13, 2012 Ship listed April 16, 2014 32 Lives Lost Captain delayed call to abandon ship 304 Lives Lost Hit rocks causing gash Capt. Abandoned ship before passengers Illegally modified
Recommended Solution • Create the ability for the nearest Coast Guard to activate an alarm on board the ship • Cannot be overridden • Must be obeyed by all crewmembers • Signals all passengers and crewmembers to immediately initiate evacuation • Criteria for Coast Guard Intervention • List Angle • Acceleration of Vessel • Ship Vitals
Class Diagram
Activity Diagrams • Current State • Precondition: Ship is in distress • Postcondition: The ship is evacuated Capt. acknowledges Ship’s distress Capt. Orders Abandon Ship Crew assists passengers with abandoning ship • Issues • If the Captain fails to acknowledge (truthfully or not) that the ship is in distress, the ship will not be evacuated in time and there will be a loss of life • This delay could be amplified if a loss of power occurs and the Abandon Ship order is not transmitted clearly
Activity Diagrams • Future State • Precondition: Ship is in distress • Postcondition: The ship is evacuated List angle, acceleration, and ship conditions are sent to Coast Guard Ship begins to list Capt. acknowledges Ship’s distress Coast Guard activates alarm to evacuate ship Crew assists passengers with abandoning ship Capt. Orders Abandon Ship
Problem Interdependency Graph Softgoal Interdependency Graph
Reference Model D 1: The ship is listing. D 2: The ship is transmitting its list angle. The ship’s intercom and radio system R 1: The Coast Guard activates the alarm on the ship when it is listing. S 1: If the ship lists to a certain angle, an alarm will instruct passengers to evacuate.
Summary • You cannot entirely remove human error or ill-intentioned actions. • Allowing the Coast Guard to make the unbiased decision to abandon ship with remove any pride from clouding the situation, ultimately saving lives and reputations.
References • • • • http: //perspectives. mvdirona. com/2012/01/studying-the-costa-concordia-grounding/ http: //www. bbc. com/news/world-europe-16563562 http: //www. bbc. com/news/world-europe-31430998 http: //www. awpagesociety. com/wp-content/uploads/2013/03/Carnival-Corporation-Case-Aand-B. pdf http: //www. agcs. allianz. com/insights/white-papers-and-case-studies/safety-and-shippingreport/ http: //www. telegraph. co. uk/news/picturegalleries/worldnews/10985345/Costa-Concordia-inpictures-Inside-the-cruise-liner-after-two-years-underwater. html? frame=2983891 http: //www. enavinternational. com/wosmedia/273/costaconcordiaanatomyofanorganisationalaccident. pdf http: //www. cbsnews. com/news/fact-sheet-the-costa-concordia-cruise-liner/ http: //www. shipcruise. org/costa-concordia/#sinking_animation http: //www. rina. org. uk/costa_concordia_passenger_evacuation. html https: //www. boat-ed. com/pennsylvania/study. Guide/Hull-Types-and-How-They. Operate/101039_101039011 http: //www. theweek. co. uk/world-news/58164/south-korea-ferry-death-toll-hits-100 -salvagebegins http: //www. nbcnews. com/storyline/south-korea-ferry-disaster
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