The Toti-class submarine designed and built in Italy by CRDA Monfalcone for the Italian Navy, it's an anti-submarine submarine ^^.
This particular model is based on the S506 Enrico Toti - a sub built during the 1960s and decommissioned in 1992, it's now housed at the "Museo della scienza e della tecnlogogia Leonardo da Vinci" in Milan, Italy. Papercraft by Mascal.
Toti Submarine Papercraft (S506 Enrico Toti) [Download]
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