“…The microeconomic factors discovered in the literature can be listed as age of the ship (Alizadeh and Talley, 2011), size of the ship (Kavussanos, 2003), speed of the ship (Beenstock and Vergottis, 1989;Magirou et al, 2015), characteristics of buyers and sellers (Adland et al, 2016), open registries (Wilmsmeier and Martinez-Zarzoso, 2010), and bunker price (Shen and Chou, 2015;Yin et al, 2017). On the other hand, the macroeconomic and some other factors discovered in the literature can be listed as oil price (Shi et al, 2022), fleet size (Xu et al, 2011), industrial production (Strandenes, 1984), connectivity to transportation network (Wilmsmeier and Hoffmann, 2008), exchange rates (Chi, 2016), commodity prices (Bandyopadhyay and Rajib, 2023), inflation (Michail et al, 2022), GDP (Başer and Açık, 2019), port efficiency (Lei and Bachmann, 2020), port closures (Lewis et al, 2006), market sentiment (Bai et al, 2021), weather conditions (Açık and Başer, 2018), and pandemics (Xu et al, 2022). Any factor that affects freight will naturally be reflected in the GSCPI value, but modeling all these factors is relatively difficult.…”