According to a description penned in the second century C.E., the Alexandrian grain carrier Isis was over 180 feet [55 m] long, was about 45 feet [14 m] wide, had a hold some 44 feet [13 m] deep, and could probably carry over a thousand tons of grain and perhaps a few hundred passengers.
उसका मालकक्ष करीब १३ मीटर गहरा था, जिसमें एक हज़ार से ज़्यादा टन अनाज भरा जा सकता था और सौ से ज़्यादा यात्री आ सकते थे ।