Scale 1:87 HO Graupner Neptun older kit but not of any specific ship, just a generic coastal freighter with or w/o cranes.

Inside is a Graupner 350 motor geared 3:1; speed control; using one 7.2v 2400 NiMH

Found a post of some else’s work.

https://www.modelboatmayhem.co.uk/Modellers/Mark_Wilkes/neptun.htm