Well, Sarah's reproduction of the page reveals another bad use of Volkov (poor Volkov, he seems to be the one subject to more abuse than the Grand Duchesses!).
Two paragraphs before the previous text discussed. They talk about how the bored and drunken soldiers fired shots off the boat and tossed grenades at the birds. THEN "the boat slowly edged away from the Tobolsk wharf, churning a ribbon of white foam as it steamed across the dark water into the fire of the Siberian sunset. It was the beginning of what Volkov later termed "a savage orgy".
The clear meaning of the paragraph says that the passengers were locked up in the boat for hours before it left. The drunken and bored soldiers did their shooting and grenade tossing. THEN the Rus leaves and they say that Volkov calls the VOYAGE ITSELF "a savage orgy".
Here is what Volkov actually said. The boat left at two o'clock and steered in the direction of Tyumen. The conduct of the soldiers during the voyage was abominable. Absolutely no discipline. They fired gunshots and even threw grenades, without rhyme or reason, at birds, up in the air...It was a savage orgy.
Error of fact 1: The shooting and grenade tossing happened AFTER the boat left.
Error of fact 2: The Rus didn't steam off into the Siberian sunset. It left at 2pm.
Error of fact 3: Volkov did NOT call the voyage itself "a savage orgy". That term was used to describe the lack of discipline of the soldiers up on deck.