Singapore, April 22 -- Three vessels - two cargo ships and a fuel tanker - appeared to have crossed the Strait of Hormuz on Tuesday as US and Iranian blockades remained in place. The Shoja 2, an Iranian-flagged cargo vessel, transited the strait and moved into the Gulf of Oman and is now in waters off Khor Fakkan in the United Arab Emirates, ship-tracking data show. The progress of the ship is being closely watched after the US Navy seized another Iranian cargo ship on Sunday, the first capture since Washington imposed a blockade of the waterway last week. The other two vessels have no clear links to Iran. The Lian Star, a general cargo ship flagged to Gambia, crossed the strait and is now sailing southeast along Iran's coastline in the Gulf of Oman. The Ean Spir, a medium-range tanker previously named Blue Commander and with no identified owner, began sailing northeast from waters near Ras Al-Khaimah in the UAE, and is now heading south into the Gulf of Oman, indicating Shinas in Oman as its destination. Otherwise, traffic through the vital waterway remained at a virtual standstill following a chaotic weekend in which Iran declared the corridor open before closing it again after the US declined to lift its blockade. Around 800 vessels remain stuck in the Persian Gulf. President Donald Trump said on Monday that the American blockade would remain in place for now. The US leader said a two-week ceasefire with Iran, which expires Wednesday evening in Washington, was not likely to be extended. Talks between the two countries are expected to take place in Pakistan. Traffic through the strait has been uncertain since the ceasefire came into effect. At least three Mediterranean Shipping Co. container ships and a MSC cruise liner, along with a handful of other passenger vessels, appeared to have exited the Persian Gulf on Saturday, hugging the Omani coastline. On Monday, two Iran-linked LPG carriers, and two oil product tankers - including one with Iranian ties - transited the strait in both directions....