Chinese boxship player SITC International Holdings has exercised options at Huanghai Shipbuilding for two additional 1，800 teu vessels.

The Hong Kong-listed shipowner is paying nearly $58m to lift the series at the compatriot yard to six， with deliveries for the latest pair scheduled by June and August of 2027.

SITC said it signed a shipbuilding contract with Huanghai in June this year for four firm and six optional 1，800 teu newbuilds， meaning it has four more slots booked for potential future fleet expansion.

According to Alphaliner， the intra-Asia carrier ranks 14th in the global container shipping enterprises with a capacity of 182，429 teu spread across 117 vessels， including 104 self-owned.