The slave ship in a London courtyard
![The slave ship in a London courtyard](https://ychef.files.bbci.co.uk/live/624x351/p0d6cy0b.jpg)
A new installation of 140 blocks of wood summons up a forgotten history, writes Melissa Chemam. Laid out on the stone courtyard of London's Somerset House, like the fossilised remains of a whale, there is the outline of a slave ship. Made up of 140 blocks of charred wood, it is O Barco / The Boat by …