Polish sources listed two tugs bought 27.08.1920 from the Finish firm of Nurminen. There are no detailed data but ca 55t, 120hp , ca 20m
KRAKUS -ex KYLIKKI and WANDA ex MELIKKI
The Polish sources gives that they were built prior to 1920 by Crichton - Vulcan at Abo(Turku)

The both shipyards merged in August 1924. They were not built by Crichton shipyard as nearly complete yard list is available. Vulcan could be possible builder , they built at least 76 units till 1924. The Vulcan yard list is not available.

I have 1921 and 1922 Finish registers. There is one owner
Johan Nurminen O/Y , Helsinki (sometimes as John) which posessl 3 motorships and 1 steamer registered in Rauma and 1 steamer inWiipuri.

Shipyard in Varkaus built 4 small tugs for A.Ahlström Oy , Uuraa
Data finish register :
built 1918 41.94grt/19.18nrt 18.29x4.30x2.21m 15hp
Data shipyard:
built 1917 62'x14'4''x5'3''

Compiled
#539 KYLLIKKI in 1921 Wiipuri #2405
#540 ANNIKKI in 1921 Wiipuri #2406
#541 NYYRIKKI not listed
#542 MIELIKKI not listed

I have idea that the Polish ships were the #541-542 of Varkaus.
Perheps could somebody add more to the above ships. Perheps exist a plann or photos of Ahlström ships ?