Svašek Hydraulics

Coastal, harbour and river engineering consultants

 
COSTA CONCORDIA
METOCEAN CONDITIONS

CLIENT
    Rina Group

LOCATION
    Isola del Giglio, Italy

DATE
    2012

SERVICES
    Operational sea state
    conditions,
    Extreme sea state conditions,
    High quality time series,
    Extreme statistics


Rina Services SpA has requested a Metocean report on behalf of cruise ship Costa Concordia which grounded on 13 January 2012 in the Tyrrhenian Sea just off the shore of Isola del Giglio, near the western coast of Italy.

The Metocean report describes data collection, transformation of the sea state from deep water to the location of the Costa Concordia using SWAN numerical modelling and derived operational and extreme statistical results.

Time series (3 hourly) of 10 year period generated by ECMWF numerical wave modelling are used as boundary conditions for SWAN modelling.

The following statistics of wind and wave conditions at the location of the Costa Concordia are presented:

  • Annual wave climate in the form of Hs/Tp scatter diagrams
  • Directional wave climate
  • Duration of storms statistics
  • Extreme annual and seasonal values for return periods of 1, 2, 3, 5 and 10 years
  • Maximum wave height
  • Swell wave height