A floating gas-turbine generator meant to alleviate South Africa’s crippling power cuts has run into objections by oyster farmers and small-scale fishermen, who fear the environmental damage will destroy their livelihoods. The seafood sellers fear the 415 MW ship – to be moored for two decades at Saldanha Bay, 140 km north of Cape Town – will pump hot water into the bay and make endless noise, spoiling farmed oysters and scaring off fish as Africa’s most industrialised country scrambles to fix electricity problems.