Greek Tour Boat IRINI at Heraklion 11-3-2019.

With joint efforts by me (for the Greek part) and Neil Burns (for the English part) her full history was finally uncovered. The information on her company's website (https://chaniacruises.gr/en/home/) has errors.

Information from the book about Philip & Son :
https://www.abebooks.co.uk/servlet/SearchResults?isbn=9781901703429&n=100121501&cm_sp=mbc-_-ISBN-_-new

SILVER CLOUD (twin-screw motor yacht)
O.N. 148016, 83g 74n 88Tm 84.2 o.a., 78.75 x 16.4 x 7.9 feet.
Two 4-cyl. oil engines by Gardner Engines Ltd., Patricroft; 72 BHP each, 10 knots.
Price 9,750 pounds.
14.4.1930: Launched for Captain A.S. Wills, Thornby Hall, Northamptonshire after being ordered by H.D. Hooper; registered Dartmouth.
8.1940: Requisitioned by the Admiralty for service as a harbour defence craft.
6.1946: Sold.
1957: Fitted with two 6-cyl. oil engines by Russell Newbury Ltd,. Newbury; each 115 BHP.
1970: Renamed OLD FASHION
1971: Renamed DIRK HATTERICK III
1980: Deleted from Lloyd's Register of Yachts

There is also a photo of her as SILVER CLOUD in that book.

This fits with the info i had from the official Greek Registries :

Greek career :
MONIKA (yacht), registered at Piraeus (off. no 2866 - Class A') from 23-4-1981 to 26-11-1991. Owners : Lemonis & Nikoloulias
IRINI (tour boat), registered at Chania (off. no 169 - Class A') since 26-11-1991. Owner : G. Sifogiannakis

Rebuilt in 2002.
Tonnage : 65 gt. Call sign : SV6467. Dimensions : 30m X 4,65 m. 2 Man 10 cyl. engines 750 BHP each., 13 knots.

Owner in 9/2018: Asi Gonia Shipping Company (Ασή Γωνιά NE)
c/s SV6467, MMSI 237432300

More photos here :
http://www.shipspotting.com/gallery/photo.php?lid=2392518
and here :
http://www.shipspotting.com/gallery/photo.php?lid=2339019