# Developments, Trends, and Challenges in Optimization of Ship Energy Systems
## 4 Historical Development of Optimization of Ship Energy Systems  
### Articles Published in Journals  
In order to investigate the development of optimization of ship energy systems, a search for related articles in numerous journals has been performed in the period March-April 2020 using keywords,with no restrictions on the publication year. In addition, the reference list of each article thus located has been searched for articles on optimization of ship energy systems, as they are defined in Section 2.1. In total, 57 articles have been found. Being interested in the development of the field with time, the articles are written in chronological order in Table 1, while main characteristics for each article are written in Appendix A, in the same order as in Table 1. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Reference**} & \multirow{2}{*}{**Year**} & \multirow{2}{*}{**System**} & \multicolumn{5}{c}{**Optimization**} \\ \cline{5-8}  & & & & **S** & **D** & **O** & **Dynamic** \\ \hline
1 & [37] & 2008 & COGES & \(\bullet\) & \(\bullet\) & \(\bullet\) & \\ \hline
2 & [18] & 2008 & COGES & \(\bullet\) & \(\bullet\) & \(\bullet\) & \\ \hline
3 & [38] & 2013 & MCFC preformer & & \(\bullet\) & & \\ \hline
4 & [39] & 2013 & ORC & \(\bullet\) & \(\bullet\) & & \\ \hline
5 & [40] & 2014 & Kalina—4 variations & & \(\bullet\) & & \\ \hline
6 & [41] & 2015 & ORC & & \(\bullet\) & \(\bullet\) & \\ \hline
7 & [19] & 2015 & ORC & & \(\bullet\) & \(\bullet\) & \\ \hline
8 & [42] & 2015 & PV/diesel/battery & & \(\bullet\) & & \\ \hline
9 & [43] & 2015 & ORC & & \(\bullet\) & & \\ \hline
10 & [44] & 2015 & DG sets & \(\bullet\) & \(\bullet\) & \(\bullet\) & \\ \hline
11 & [45] & 2016 & Total & & \(\bullet\) & & \\ \hline
12 & [46] & 2016 & PT + Rankine & \(\bullet\) & & & \\ \hline
13 & [47] & 2016 & MCFC + steam cycle & \(\bullet\) & & & \\ \hline
14 & [48] & 2016 & Main engine & & \(\bullet\) & \(\bullet\) & \\ \hline
15 & [49] & 2016 & DG/PV/battery & \(\bullet\) & \(\bullet\) & \\ \hline
16 & [50] & 2016 & Transcritical ORC & \(\bullet\) & & \\ \hline
17 & [51] & 2017 & ORC & \(\bullet\) & \(\bullet\) & \(\bullet\) & \\ \hline
18 & [52] & 2017 & EGR + steam Rankine & \(\bullet\) & & & \\ \hline
19 & [53] & 2017 & RO desalination + ORC & \(\bullet\) & & & \\ \hline
20 & [54] & 2017 & ORC & \(\bullet\) & \(\bullet\) & \(\bullet\) \\ \hline
21 & [55] & 2017 & Supercritical CO\({}_{2}\) (GT) & \(\bullet\) & & & \\ \hline
22 & [56] & 2017 & DG/PV/battery/supercapactor & \(\bullet\) & & & \\ \hline
23 & [57] & 2018 & Various & & \(\bullet\) & & \\ \hline
24 & [58] & 2018 & Hybrid power & & \(\bullet\) & \(\bullet\) \\ \hline
25 & [59] & 2018 & Boil-off reliquefaction & \(\bullet\) & & \\ \hline
26 & [60] & 2018 & Thermoelectric generator & \(\bullet\) & & \\ \hline
27 & [7] & 2018 & Diesel total & \(\bullet\) & \(\bullet\) & \(\bullet\) & \\ \hline
28 & [61] & 2018 & PV/battery/DG/cold ironing & & \(\bullet\) & \\ \hline
29 & [62] & 2018 & PV/battery/DG/cold ironing & & & \(\bullet\) & \\ \hline
30 & [63] & 2018 & Total with MCFC & \(\bullet\) & \(\bullet\) & & \\ \hline
31 & [64] & 2018 & DEs and DG sets & \(\bullet\) & \(\bullet\) & \\ \hline
32 & [65] & 2018 & Main engine & & \(\bullet\) & \(\bullet\) & \\ \hline
33 & [66] & 2018 & IES cooling network & & \(\bullet\) & & \\ \hline
34 & [67] & 2019 & Hybrid & & \(\bullet\) & \\ \hline
35 & [68] & 2019 & Battery & \(\bullet\) & \(\bullet\) & \\ \hline
36 & [69] & 2019 & HESS & \(\bullet\) & & \\ \hline
37 & [70] & 2019 & Hull, WJ, PV, ESS & \(\bullet\) & & \\
38 & [71] & 2019 & Diesel or hybrid & & \(\bullet\) & \\ \hline
39 & [72] & 2019 & Diesel or hybrid & & \(\bullet\) & \\ \hline
40 & [73] & 2019 & DE + battery & \(\bullet\) & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Journal articles on optimization of energy systems of ships by the year of publication. (Explanations of symbols and abbreviations are written after Section 7 Closure.).