Sanity checking reports of increased Russian submarine activity
There have been reports that Russian submarine activity has returned to Cold War levels. This article uses publicly available data to compare recent activity to Cold War levels.... 
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O_Eneroth_Submarine_1897
Vintage submarine design from 1897
In the late 1800s Sweden was q leading powerhouse in submarine design, with a Nordenfelt Class submarine being the first in the world to launch a torpedo in 1888. Ten years later another Swedish engineer, O Eneroth, was proposing a cutting-edge submarine design.
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Photo from Sjöhistoriska museet.
3GST9
An advanced Dry Combat Submersible design from the end of the Cold War, the 3GST9 has a reputation of being a very impressive boat, continuing the Italian tendency to be ten years ahead of everyone else in this field. Its Air Independet Power (AIP) made it a generation ahead of contemporary designs. Read More >....
Alfa_Class_Submarine
Russian ALFA Class interceptor submarine At the height of the Cold War NATO submariners found themselves confronting a Soviet submarine which not only greatly out-performed their own boats, but which could operate beyond the reach of their weapons... Read More >....
Burning_Narco-VSV
Fifth Narco VSV
The fifth Narco-VSV (Very Slender Vessel) has been intercepted by the US Navy. The Cyclone Class patrol boat USS Zephyr (PC 8), with a US Coast Guard detachment aboard, seized the vessel in the Eastern Pacific on 7th April 2018....
Submarine_Recognition_Poster
Submarine Recognition poster
Essential reference for Journalists and surface navy alike....
How_to_identify_a_submarine
New Submarine Recognition poster
Essential reference for Journalists and surface navy alike. ....
Ru_Raptor_2018-04
14th Pr.03160 "Raptor" assault boat joining Baltic Fleet An image recently released by the Russian Ministry of Defense showcasing a Project 03160 "Raptor" Assault Boat reveals an interesting detail.... 
A26
A-26 Blekinge Class Next Generation AIP Attack Submarine The A-26 is one of the most advanced and forward-looking non-nuclear submarine designs in the world.... Read More >....
Rotinor BlackShadow and Divejet DPVs
Rotinor's Diver Propulsion Vehicles (DPVs) are widely used within the Special Forces community and represent a major player in the market. Although innovative and high-tech, these craft represent rapidly maturing technology and are noted for the high underwater speed. Read More >....
