Napa First Full-Scale Ship Flooding Tests

Wednesday, October 21, 2009
Photo courtesy Finnish Defence Forces Perttu Kurvinen

Napa Ltd is continuing its research into the physics of a flooding vessel; this effort is part of Ship Flooding, a national research project on progressive flooding and damage stability of ships being conducted in Finland. The other partners are the Finnish Naval Research Institute, Technical Research Center of Finland (VTT), Helsinki University of Technology (TKK) and STX Finland Cruise Ltd. The project is funded in part by Tekes (the Finnish Funding Agency for Technology and Innovation).

Several full-scale flooding tests were performed between August 30th and September 3rd 2009 using the Facturku, a decommissioned fast attack craft of the Finnish Navy. The length of the ship was about 147.6 ft and the displacement is roughly 220 tons. The tests were performed by the Finnish Naval Research Institute and the instrumentation was provided by VTT. The measurements included ship motions, the progression of the floodwater and air compression.

The main objectives of the project were:
• Improved knowledge of flooding mechanisms in full scale (flow characteristics, permeabilities, etc.)
• Air compression effects in a damaged tank
• Validation of the time-domain flooding simulation

Within the project, the Napa time-domain flooding simulation tool is extensively validated against the experimental results. This simulation tool has previously been validated against model test results, but these full-scale flooding tests will eliminate all scale effects that are known to be important, especially with regard to air compression in the flooded tanks. The results of the project will be published in scientific venues.

(www.napa.fi)
 

Maritime Reporter June 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Maritime Safety

Electronic Navigation & Dispute Resolution: Coming of Age

ECDIS, AIS, GPS Electronic navigation systems such as GPS, Electronic Chart Displays (ECDIS) and Automatic Identification Systems (AIS) provide great assistance

Klüber Obtains Certification for Manufacturing Facilities

Klϋber Lubrication has received the National Sanitation Foundation (NSF) ISO 21469 certification at its Londonderry, New Hampshire facility. The certification from

Pier Damaged at Port Canaveral

Undergoing Repairs While Coast Guard Investigates   The U.S. Coast Guard is investigating a weekend incident that caused pier damage and scattered concrete debris in the harbor on Sunday.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1569 sec (6 req/sec)