Rechflot which went down in history

Why are they not profitable? It's simple: each of these ships was equipped with a powerful diesel engine capacity of 400-419 M 800-900 L \ with 1250-1500 rpm pr ... this monster let m \ x rise to "wing" and cut the water column at a rate of up to 65 km \ h ... it was the most low-speed "Dawn" - she had hydrofoils, but still overclocked up to 40 km \ h.
1. "Rocket»





2. "Meteor»



3. "Sunrise»



4. "Polesie»



5. "Dawn»



6. winged "Eaglet»