Influence of hull entrance angle “Perintis 750 DWT”, toward ship resistance: the case study for design development “Perintis 750 DWT.”Eko Sasmito Hadi, Parlindungan Manik and Muhammad IqbalMATEC Web of Conferences, 159 (2018) 01057DOI: https://doi.org/10.1051/matecconf/201815901057