This is the final chapter of the ill-fated journey of the cargo ship Galapaface - which struck bottom near Puerto Baquerizo Moreno on San Cristobal island in early May.  Against many odds, it was laboriously refloated, environmental damage was reported to be very minor, and it was towed to deep waters earlier this week.   The final solution, to sink it in 2,500 metres of water, took place 32 km (20 miles) outside the boundaries of the Galapagos Marine Reserve yesterday.  About as good as you can expect for the outcome of this accident.