N.V. STOOMVAART MAATSCHAPPIJ “NOORDZEE”.

Brown 1926 and Talbot-Booth’s 1942–44 accounts give SMMN in the corners.

Brown 1929 gives SLMN.

Brown 1934 and 1943 give SVMN. The source also says Brown 1943 has black funnel letters, labelling that funnel N395, while the source list assigns the 1943 version to N396. Jordan leaves letter colours unspecified and gives SM and MM vertically on the two sides.

Wij Varen Weer 1946 gives SVMN on the flag, plausibly Stoom Vaart Maatschappij Noordzee, but SMVN on the funnel. This inconsistency prevents Rosanoski treating the interpretation as certain.