What Is It With The Russians Having Subs Under Tow Sink On Them?

First we had the old November-class SSN K-159 that sank under tow in the Barents in 2003 (resulting in the loss of nine crewmen) and now we get word that an old Whiskey-class SS being towed to Thailand just sank in the North Sea off Jutland. While this almost assuredly wasn't a military tow job, it seems like the Russian Navy would have at least checked out the condition of the tow before they gave them permission to leave. From the AP article:

There were no people or weapons on board the Whiskey-class submarine when it sank Monday in an area known as Jysk Reef, about 34 miles off the coast of the Jutland peninsula, the Danish navy said.
A tug boat was towing the vessel when it started taking in water, forcing the crew to cut it loose for their own safety, navy spokesman Klaus Randrup Rasmussen said. There was no risk of pollution because the submarine was not carrying any fuel, weapons or other hazardous material, he added...
...It was not immediately clear where the submarine was coming from. Skov said it was being towed to Thailand, and that the Thai owner was planning to salvage it...
...In Thailand, the owner of the Jesada Technik Museum in Nakhon Pathom Province told the Bangkok Post last month that he had bought a Russian Whiskey-class submarine for the museum. Danish authorities could not confirm whether that was the vessel that sank Monday.

I'm sorry, but this is just pathetic.