Singapore fuel oil trading volumes have soared after the 380-cst front-month time spreads widened by around $1 per tonne from the previous day's close, in what could develop into an aggressive trade strategy that occasionally rattles this market. The 380-cst March/April time spreads on the Intercontinental Exchange (ICE) saw about 700,000 tonnes in contracts trade after physical trading in the S&P Global Platts Market-on-Close (MOC) price assessments concluded at 0830 GMT on Tuesday. The flurry took the spreads to about $1.70 a tonne in post-European trade by 0400 GMT on Wednesday, from around plus 70 cents a tonne previously. Traders…