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CRS members visiting MARIN’s Depressurised Wave Basin (May 2012)


years blossomed in the decades that followed. Valuable knowledge was collected through extensive research and in many cases this knowledge was implemented in software tools developed specifically for design studies. Potential flow theory and a good deal of empiricism formed the basis for long term software development, constantly improving the quality of prediction and extending the range of applicability.


In the area of manoeuvring, research continued in the projects Manoeuvring in Early Design Stage (MED, 1988), Manoeuvring with Single Screw Ships (MAN, 1993), Manoeuvring with Twin Screw Ships (MANTS, 1997), and Manoeuvring with Pods (MAN3, 2000). The COGNAC projects (2003, 2007) addressed the manoeuvring behaviour at low speeds, including crabbing.


When it comes to seakeeping, the development of a frequency domain linear potential flow code for hull pressure calculations for SWATH type vessels was started in the SWATH project (SW, 1990), which was followed by PRECAL (1996) and PRETTI (2003, 2007), extending the scope to flexible ships,


multi-hull configurations and nonlinear time domain calculations. Nonlinear and viscous roll damping and roll stabilising devices were examined in Roll (Damping) (ROL, 1981 and ROLL, 2001), followed by Roll Reduction (RR, 2013, 2017). Experimental research into the phenomenon of added resistance in waves was carried out in the RAW project (1980). A series of projects focused on internal loads: Hull Girder Loads (HGL, 1984), Sagging-Hogging / Sea Loads (SAGHOG/SL, 1991) and Transverse Loads (TRANSV, 1998).


Structural analysis was explored in Ultimate Strength (USTR, 1980), Ship Monitoring and Comparative Studies (SMACS, 1998) and Structural Load Requirements (STRUC, 2001, 2006). Nonlinear effects in structural integrity assessment were addressed in SANE (2010) and SIINE (2014). Much effort was spent on the development of the STRUC software tool for assessment of structural integrity and fatigue life. Wave impacts and the resulting hydro-structural response were the subjects in Bow Flare Slamming (BFS, 1977) and Slamming Loads on Ships (SLAM, 1990). Research continued into the


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