Still seems to be some ncertainty about this one's origin:
http://rven.info/schip.aspx?=725
http://www.varenderfgoed.nl/galerij/blueboy.html
https://www.lvbhb.org/

19t, 16.75 x 3.67 x 1.35m
built 1910 Scheepswerf D Goedkoop Jr., Amsterdam
motor (Kromhout, No.459?)
1910 [owner and name unknown] "management vessel", Amsterdam
1950 (reg Rotterdam)
or
16.10 x 3.54m
built 1915 De Groot en Van Vliet, Slikkerveer (Yd 63)
motor 25hp
1915 Van Nievelt Goudriaan NV, Rotterdam as NIGOCO (reg Rotterdam, ON R4656N)

then later:
1953 active in flood disaster at Burghsluis, Zeeland as BLUE BOY**
1955 (ON 9326BRott1955)
c1960 oil transporter in Rotterdam area
1970s sold for conversion to pleasure vessel
1992 re-engined with M6cyl 120bhp DAF DD575
19xx J Hoogerwerf, Vlaardingen (reg Vlaardingen)

** http://www.machinekamer.nl/forum3/viewtopic.php?t=1644&start=690#p20854

According to this info she's a tug boat of type Amsterdammer from 1910 and part of historic collection Varend Erfgoed Nederland with RVEN-Nr. 725 assigned, please see here on this Dutch site :
http://rven.info/schip.aspx?=725

Best regards Hans

Hello davidships, some information can be found here http://www.varenderfgoed.nl/galerij/blueboy.html

Best regards Hans