Dear Francesco,

Source: [www.archieven.nl]

2407 Veer, A. van der, betreffende het Bureau Teruggave Visserijvaartuigen te IJmuiden .... de stoomtrawlers IJM 37, "Gloria" en IJM 6 "Norma Maria", in de Vissershaven.
Date : approx. 1945. This would mean that Gloria IJM 37 returned from Germany in 1945-1946.
I wonder whether you have access to Lloyd's 1945-1946 to check if IJM 37 is the "255 brt" Gloria that survived World War II!

BTW this ship must have been requisited by the German authorities and served as harbour patrol vessel HI13 and HD03 (source: [oceania.pbwiki.com]).

Deo Gloria is a coaster (source: Op tegengestelde koersen, D. Brongers).

Cheers,
Willem