Shipping – Charterparty. The laycan window in a shipping contract had identified the time at which the parties had expected a vessel to arrive at the loading port and had therefore been equivalent to an estimate time of arrival (ETA) for the purposes of the obligation under Monroe Bros Ltd v Ryan[1935] All ER Rep 163 (Monroe). Had no ETAs been given in the present case, the Commercial Court would have held that there had been an absolute obligation to commence the approach voyage by a date when it had been reasonably certain that the vessel would have arrived at the loading port by the cancelling date.