These are the current ships of the month 2019:
January
MSC Jade
February
Royal Princess
March
Sea Beauty
April
Stolt Bobcat
May
Vilnia Mærsk
June
COSCO Shipping Azalea

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Database
There are currently:
566 Tankers
43 Ferries
55 Reefers
80 Tugs
and 7,876 images in the online database so far!