US Diesel Prices Climb to $6.52, Fishing Fleets Hit by Rising Costs and Weak Demand

US diesel prices continue to climb, rapidly squeezing profit margins for commercial fishing fleets.

Data from the US Energy Information Administration shows that the national average diesel price rose to $6.529 per gallon in the week ended September 21, marking the 11th consecutive weekly increase.

For the fishing industry, which relies heavily on fuel, the impact of this price surge is especially pronounced.

The problem is that fishermen cannot easily pass on fuel costs to customers the way trucking companies or airlines can.

Catch prices are typically determined by dock buyers rather than set by fishermen themselves.

With diesel, bait, fishing gear, insurance, and maintenance costs all rising simultaneously, fishermen are left to absorb most of the cost pressure on their own.

Diesel Cost Nearly Doubles; Some Boats Stop Going to Sea

In Massachusetts, diesel prices at the Chatham fishing port on Cape Cod have reached $6.44 per gallon, compared with about $3.48 a year earlier.

A local fisherman said his vessel consumes roughly 200 gallons of diesel per week, meaning fuel costs alone have risen sharply on a weekly basis compared with last year.

The situation is equally severe in the southern United States.

Some shrimp fleets in Alabama are facing diesel prices of about $6.16 per gallon, roughly 80% higher than a year ago.

Because fuel expenses have already consumed most of their profits, some boat owners have chosen to keep their vessels at the dock and wait for prices to fall.

Some industry participants say that even when shrimp operators continue to go to sea, they are earning extremely thin profits, or nearly breaking even.

For small and medium-sized fleets, as diesel prices continue to rise, continuing operations is becoming increasingly uneconomical.

Rising Costs Meet No Improvement in Lobster Demand

Rising fuel costs are not the only problem fishermen face.

The revenue side is also under pressure.

Recently, demand in the lobster market has remained cautious.

Prices were once at relatively high levels in the spring, but as autumn arrived, buyers have been purchasing more based on short-term inventory needs without noticeably chasing prices higher, leaving dock purchase prices without further upward momentum.

As of July, Canada's live lobster export volume had fallen 10.5% year-on-year, adding further pressure on supply and prices in the North American lobster market.

This means lobster fishermen in the northeastern United States are currently facing a classic double squeeze: on one hand, costs for diesel, bait, nets, ropes, insurance, and maintenance continue to rise; on the other hand, catch sale prices have not risen enough to cover these costs.

Profit Margins in Maine's Lobster Industry Continue to Narrow

Maine is one of the most important lobster-producing regions in the United States.

In 2025, local lobster landings totaled 78.8 million pounds, the lowest level since 2008, but total dock value still exceeded $461 million, reflecting how earlier higher prices provided some support for revenue.

However, the industry environment is now changing.

With diesel prices surging and lobster demand turning cautious, it is becoming increasingly difficult for fishermen to offset costs through higher prices.

If dock prices remain under pressure, actual profit margins for fleets could continue to deteriorate even if catch volumes remain stable.

Global Diesel Shortage Means High Costs May Persist

This round of diesel price increases is not solely caused by domestic US refining issues.

The global diesel market remains tight.

The conflict between the United States and Iran, along with Russia's extension of its diesel export ban, is constraining international supply.

At the same time, distillate inventories on the US East Coast have fallen to their lowest level for this time of year since 1990, and national distillate inventories have dropped to their lowest August level since 1982.

Related forecasts suggest that US distillate inventories could fall below 100 million barrels in September and remain below the five-year low for most of next year.

Under these circumstances, there is limited room for a significant short-term decline in diesel prices.

For fishing fleets, this means the current cost pressure may persist for a longer period.