Береговой трамвай,	SNCV Spm моторный	№ 9123
SNCV Standard деревянное прицепной		№ 19211

When 2 groups (tram and train enthusiasts) meet...
The crossing is since long gone. It was a connection to the fish market of Zeebrugge.
The 9123 had recently come over from Charleroi and was still in its original condition from there, so it was converted to be able to stop at the stations there.