Optimization of routing with uncertainties

Real-time risk of ship structures integrating structural health monitoring data: Application to multi-objective optimal ship routing

“…Routing optimization is a well-established topic that has been deeply investigated in the past (Spaans, 1985;Hagiwara, 1989;Bijlsma, 2008;Szłapczynska and Smierzchalski, 2009;Bijlsma, 2010;Fagerholt et al, 2010;Tsou, 2010;Papatzanakis et al, 2012;Chang et al, 2013). Generally, ships may be in danger when their stability and/or structural capacity are compromised.…”

“…Lastly, an application on optimal short range routing of ships is developed considering risk as the main performance indicator. Ship routing is an important and interesting part of ship management (Journée and Meijers, 1980;Spaans, 1985;Brown et al, 1987;Hagiwara, 1989;Bijlsma, 2008;Szłapczynska and Smierzchalski, 2009;Hinnenthal, 2008;Dolinskaya et al, 2009;Bijlsma, 2010;Fagerholt et al, 2010;Tsou, 2010;Papatzanakis et al, 2012;Chang et al, 2013;Decò and Frangopol, 2013). SHM and weather prediction are considered within the proposed optimization framework, with objectives being the minimization of the estimated time of arrival (ETA), minimization of mean total risk, and minimization of the fuel cost.…”

Numerical simulation of large amplitude ship motions and applications to ship design and safe operation

“…Similar trend has also been observed by other researchers (Kataoka et al, 2002). What"s more, the deviation between the results from traditional differential method and integral method is obvious, which indicated the necessity to employ the concept of integrating form expression (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) when dealing with the large-amplitude problems.…”

“…Since k 1 wave system is neglected, only the weighting functions for k 2 wave system have been shown. The weighting functions are defined by the following expressions: Figure 2.21 shows the non-dimensional Kochin function amplitude in the range α 0 < θ < π and Figure 2.22 shows the integrand of the second term in expression (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19). A more detailed analysis can be seen in Naito, et al (1988).…”

“…The second approach is based on a frequency domain 3D panel method NEWDRIFT for the solution of potential calculation. The deduced first-order results either from the time-domain or the frequency domain approach are introduced in equations 2-22and 2-23for the calculation of the Kochin functions, from which the added resista nce is calculated according to equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19).…”