It is reported that "Matsushima" was ordered by Korea Natural Gas Shipping Company and built by The–H Shipyard. Designed by KMSEMEC, a famous Korean design company, Hyundai Heavy Industries, HIMSEN and Donghwa Entec jointly completed the construction of the LNG tugboat. While the LNG tugboat market dominated by large shipyards and overseas engineering enterprises is growing rapidly, the market demand for small LNG tugboats is also increasing. During the gas trial stage, the shipowner and ship inspector shall cool, fill and operate the fuel tank in gas mode in sequence.
"Matsushima" has 5000 horsepower, with a speed of 14KTS/h in conventional fuel state and 16KTS/h in gas mode, showing superior performance. In view of the continuous change of tugboat engine load, the pressure double-up unit (PBU) gas supply system (FGSS) of DongHwa Entec effectively solved this problem. In the trial, the pressure change of less than 0.2Bar per second required by HIMSEN was completely met, and the LNG fuel tank did not play a buffering role. FGSS PBU evaporator and Heater adopt Printed Circuit Heat Exchanger (PCHE), which is more compact than the previous shell-and-tube heat exchanger.
In order to realize carbon neutrality in ports and reduce dust pollution, more capital will be invested in coastal ships fueled by LNG. DongHwa Entce has contracted the tugboat of Xinghai Shipping, the fishery guiding boat of Donghai Fishery Management Group and the PBU FGSS project of fishing practice boat of Gyeongsang University this year, leading this field. As an ultra-low temperature heat exchanger and engineering professional enterprise, it has been widely recognized in technology. Jin Jiarong, the specialist of Korea Natural Gas Shipping Company who participated in this trial, said that "the first case of rapid engine load change was successfully solved for the first time".