Earlier, the Russian Ministry of Defense launched the development of new folding bridges invisible to modern sensors and intended for improving survivability of pontoon sets.
"Quite a demonstrative piece of news. A pontoon set is an offensive weaponry. It ensures the speed and promptness of maneuvers, which is crucial for offensive operations. During the war in 2014, the Russian Federation spanned several pontoon bridges for rapid transportation of troops and supplies to Ukraine. Despite all masking efforts, the bridges were discovered, becoming another evidence of Russia's invasion. There is no deficit of floating equipment in Russia, with PP-91 pontoon set being in service from 1992, as well as its 2005 modification PP-91M," Butusov wrote.
Load capacity (weight of passing vehicles with one-way traffic), 60 tons
The width of the carriageway, 6.55 m
The length of one pontoon unit, 7.2 m
Surface river flow velocity, 2 m/sec
Wind wave, 1 ball
Minimum spanning time, 0.5-1 hr
Minimum roll-up time, including vehicle loading, 1-2 hr
"Thus, PP-91 suits for all kinds of modern Russian military equipment and there is no need for replacement. What does an invisible bridge mean? A normal bridge always has a floating structure, while an invisible bridge should have submerged pontoons with negative buoyancy. That is, upon spanning, the engineers submerge pontoons, making them invisible for satellites - the pictures show only water surface. The trick is not new - during World War II, Soviet engineers extensively used this masking method. The logic is clear - the new submerged bridge should be hidden from surveillance. Incidentally, it provides for a higher survivability - it's hard to hit an invisible target. An updated design will also provide for a fast spanning and roll-up," Butusov stated.
He also reminds that satellites are mostly efficient during the day. Night surveillance capabilities are rather limited.
"Spanning a pontoon set at night or in cloudy weather, its submerging, and concealing access roads will make its detection and elimination a difficult task. In case of emergency situations, the Russian Federation would do fine with their available pontoons. The new pontoon sets being currently developed in Russia are intended to be an offensive weapon. And the enemy is obvious," Butusov resumed.