UK CoastGuard news says
The two vessels had been observed by Dover Coastguard
on the radar system which monitors the Dover Straits.
The French fishing vsl was a rogue in the SW Lane
and had been seen by the Coastguard merging with the Gudermes.
She was using the wrong lane to get to the fishing grounds
a little quicker than other boats that had left Boulogne
at the same time.
The collision caused a 20ft by 6 ft gash in the port bow,
10 ft abv the waterline.
In the photos, it appears to be quite shallow.
It is quite like a 2m deep double side
would not have been pentrated.
The tank which was ruptured has lost 110 tons
of oil into the water.
The remainder of the oil has been transferred
elsewhere within the vessel.
Other sources agree the St Jacues was a rogue,
and one source says the French captain and mate were arrested
Captain later reduced spillage to 71 tons,
but some sources say that's an over-estimate.
The MAIB report is excellent,
a model of completeness, competence and objectivity.
The MAIB report makes clear
that the root cause was that the fishing vessel
was crossing the SW lane of the Dover Straits TSS with only a deckhand on watch.
The deckhand spoke no English,
so he could not understand any warnings.
The fishing vessel was the burdened vessel
but the deck hand, either asleep or confused by the traffic,
did nothing until it was too late.
The Gudemes altered to starboard at the last minute, but that was too late.