A captain's ledger: fuel, catch, and the narrowing margin

Javier Colon keeps two ledgers. One records the weight and species of his catch; the other tracks fuel, ice, and the hourly cost of running his thirty-two-foot refrigerated vessel, the María Sofía. On a Tuesday morning in early June, he sat in the wheelhouse with both open, calculating whether a three-day run to the deeper banks was worth the fuel expense. The spreadsheet told him it was marginal.

The María Sofía operates out of Puerto Azul's cooperative dock, where a dozen similar vessels tie up between runs. Colon has been fishing the same waters for seventeen years, but the arithmetic has shifted. A decade ago, a three-day run yielded enough catch to cover fuel, ice, crew shares, and a modest profit. Now, fuel costs have risen steadily while federal catch quotas—designed to protect spawning stocks—have tightened. The Federal Fisheries Authority reduced the allowable grouper catch by twelve percent in May.

"The rules are fair," Colon said, studying his ledger. "The reef needs protection. But fair doesn't pay the diesel bill." His crew consists of two deckhands, both from Puerto Azul. They work on a share system: they receive a percentage of the catch's sale price, minus their share of fuel and ice costs. When the quota tightens, their share shrinks faster than the fuel cost does.