Home » Design Solutions » NAPA Statutory Compliance  » NAPA Flooding Simulation

NAPA Flooding Simulation

Design can be improved with NAPA Flooding Simulation.

By using NAPA Flooding Simulation the designer gets a better understanding of the flooding mechanisms. The safety of the design improves as it can be evaluated more comprehensively. The developed pressure-correction technique allows a time-accurate solution of progressive flooding, internal water flow and air compression inside the ship.

NAPA Flooding Simulation has been successfully validated against measurements both from dedicated model tests and full-scale experiments with a decommissioned fast attack craft. Several different flooding scenarios, some involving also notable air compression, have been analyzed with good correspondence between the simulation results and measurements. An example is shown in the figure below.

Comparison of measured heel angle from the full-scale tests and simulation results using both rough estimations for input values and results of dedicated analysis of the discharge coefficients for the openings

Applications and benefits today 

  • Alternative cross-flooding calculations for cargo and passenger ships including the effect of air pipes (MSC .245(83))
  • Progressive flooding and internal water flow investigations for, for example, passenger ships and floating docks
  • Decision support and flooding control (time to flood/sink) on board the ship
  • Modelling of accumulation of water on deck

Success Stories

NAPA's 3D Design Tools Drive Productivity at SUNGDONG

Structural design throughput time for whole vessel models reduced by up to four weeks with NAPA D... Read more »

Japanese Kyokuyo Shipyard to improve its structural design process with NAPA Steel

NAPA’s customer base has grown steadily for NAPA Steel. We are honoured to announce the newest NA... Read more »

NAPA Data Analysis leads to €3 million investment and first commercial order for Norsepower

NAPA analysis verifies that twice the rotor sails delivers double fuel savings; 6.1% reduction in... Read more »

ClassNK-NAPA GREEN - a Comprehensive Eco-Efficiency Solution for Ship Owners and Operators

ClassNK-NAPA GREEN offers ship owners and operators a comprehensive solution to reduce fuel costs... Read more »

Bore - NAPA collaboration demonstrates environmental and financial value of operational efficiency software

1,000 tonnes of CO2 saved plus 5.8% reduction in fuel consumption, equivalent to $210,000 Read more »

Design Solutions

NAPA Flooding Simulation +

Get started

See an example of use

 

Contact us for more information:

Phone: +358 9 22 8131

Email: sales [ at ] napa.fi