Sanford's total catch and harvest volume was down 13 per cent at 55,000 tonnes.
Its wild catch was down 14 per cent at about 38,000 tonnes, due to the San Granit outage and other fleet constraints. Wild catch revenue fell 5 per cent and Sanford estimated the San Granit outage reduced earnings by about $4.1m.
Mussel volumes were down 2 per cent but sales revenue was up 10 per cent. Salmon volumes rose 13 per cent and revenue was 20 per cent higher.
Sanford said that, despite the challenges in the period, the firm's focus on getting more value from its fish saw earnings per kilogram rise a cent to 57 cents. That would have been about 61c/kg had the San Granit been available throughout the period.
The company will pay a 9 cent interim dividend, unchanged from a year earlier, on June 14 to shareholders registered at June 7.
The shares were unchanged at $6.78 shortly after the market opened and have gained 2.7 per cent so far this year.