Bunker prices sank an additional 8 percent last week, as a six month spiral has now led to a 50 percent decline in fuel prices.

The average price for high sulfur bunker fuel in Rotterdam, an indicator of the global market, dropped 8.6 percent for the week of Dec. 19 to $309 per metric ton, according to BunkerVision. The average price of low sulfur bunker fuel dropped 8.1 percent during the week to $321 per metric ton.

The price per metric ton for both high and low sulfur bunker fuel has been dropping steadily since July.

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