IIRC the PN didn't say it wants a 6,000+ ton (or any specific tonnage), it just said '6 more ships of larger tonnage.' So if they're talking to Damen, it could simply be 2,400+ ton OPVs based on the Yarmouk-series.
The PN doesn't need the SIGMA because it already has the MILGEM.
I think the CNS was referring to additional Damen OPVs,
but there is one possible other road...Damen Crossover.
The Crossover is a larger design than the OPV, but it's offered in both commercial and military specifications. The commercial versions -- i.e., Crossover Security, Fast Security, and Amphibious are built on commercial standards (like the OPV-series).
So, in theory, if the PN wants large 4,000+ ton OPVs, it could order the Crossover Security.
View attachment 680657
115 S is the smaller version of the 123 SF, and features a lower speed and moderate cargo- and additional personnel capabilities. Commercial rules are applied.
products.damen.com
At this year's IMDEX Asia, Dutch shipbuilder DAMEN unveiled a new variant of its CROSSOVER design specifically configured to answer the future MRCV requirement of the Republic of Singapore Navy.
www.navalnews.com