The Khor Abdullah is a narrow waterway that leads in from the Persian Gulf, curving around Kuwait's Bubiyan and Warba islands on one side and Iraq's Al Faw Peninsula on the other. No more than 10 kilometers (about 6 miles) at its widest point, the Khor Abdullah is the only sea access for Iraq's commercial port of Umm Qasr. Iraq has limited access to the Persian Gulf, with about 58 kilometers of coastline and only two channels deep enough for large vessels to transit: Khor Abdullah (which becomes Khor Zubair further inland) and the Shatt al-Arab. By comparison, Kuwait has nearly 500 kilometers of coastline and nine islands. Iraq and Kuwait share the Khor Abdullah equally, with the border drawn down the middle, but the navigable portion of the channel is closer to the Kuwaiti side. Thus, Kuwait effectively controls one of only two maritime approaches to southern Iraq.