Time's up, here's the answer.
The reason Warrior was brought alongside the quay at Woolwich rather than being moored in the River as was usual, is that it allowed the installation of gas lighting, the only hulk to have it.
It must have made life a little better below decks, but not much, I do not know the specific cause of the mutiny that took place in 1851, put down by Royal Marines, but life on hulks was very harsh.
My last two response posts included references to enlightened, and seeing the light which I thought may have given a final lead.
I will return with a replacement poser 'ere long.