A U.S. Army vessel carrying equipment to build a temporary pier in Gaza was heading to the Mediterranean on Sunday, after U.S. President Joe Biden announced plans to increase aid deliveries by sea to the besieged enclave where hundreds of thousands of Palestinians are going hungry.

The new push for aid came as the Muslim holy month of Ramadan was set to begin Monday in much of the world after officials in Saudi Arabia saw the crescent moon. Hopes for a new cease-fire by Ramadan faded days ago with negotiations apparently stalled.

The opening of the sea corridor, along with airdrops by the U.S., Jordan and others, showed growing alarm over Gaza鈥檚 deadly humanitarian crisis and a new willingness to bypass Israeli control over land shipments. Israel said that it welcomed the sea deliveries and would inspect Gaza-bound cargo before it leaves a staging area in nearby Cyprus.

But aid officials say that air and sea deliveries can鈥檛 make up for a shortage of supply routes on land. The daily number of aid trucks entering Gaza by land over the past five months has been far below the 500 that entered before the war.

A ship belonging to Spanish aid group Open Arms and carrying 200 tons of food aid was expected to make a pilot voyage to test the corridor 鈥渁s soon as possible,鈥� said spokesperson Linda Roth with partner organization World Central Kitchen. The ship remained at Cyprus鈥� port of Larnaca in what Roth called 鈥渁 quickly evolving and fluid situation.鈥�

Biden stepped up public criticism of Israeli Prime Minister Benjamin Netanyahu, saying he believes that Netanyahu is 鈥渉urting Israel more than helping Israel鈥� in his approach to the Israel-Hamas war in Gaza, now in its sixth month.

Speaking Saturday to MSNBC, the U.S. president expressed support for Israel鈥檚 right to pursue Hamas after the militants鈥� Oct. 7 attack on southern Israel, but said that Netanyahu 鈥渕ust pay more attention to the innocent lives being lost.鈥� He added that 鈥測ou cannot have 30,000 more Palestinians dead.鈥�

The Health Ministry in Gaza said that at least 31,045 Palestinians have been killed since the war began. The ministry doesn鈥檛 differentiate between civilians and combatants in its count, but says that women and children make up two-thirds of the dead. The ministry is part of the Hamas-run government, and its figures from previous wars have largely matched those of U.N. and independent experts.

Palestinian casualties continued to rise. The Civil Defense Department said that at least nine Palestinians, including children, were killed in an Israeli airstrike on a house in Gaza City late Saturday. Footage that it shared showed one rescuer placing the body of a dead infant on a sofa amid the wreckage.

Elsewhere, the bodies of 15 people, including women and children, were taken to the main hospital in the central town of Deir al-Balah on Sunday, according to an Associated Press journalist. Relatives said they were killed by Israeli artillery fire toward a tent camp for displaced Palestinians in the coastal area near the southern city of Khan Younis.

Israel rarely comments on specific incidents during the war. It maintains that Hamas is responsible for civilian casualties, because the militant group operates from within civilian areas.

Meanwhile, U.S. efforts began to set up the temporary pier in Gaza for sea deliveries. U.S. Central Command said a first U.S. Army vessel, the General Frank S. Besson, left a base in Virginia on Saturday and was on its way to the Eastern Mediterranean with equipment for construction.

U.S. officials said that it would likely be weeks before the pier is operational.

The sea corridor is backed by the European Union together with the United States, the United Arab Emirates and other countries. The European Commission has said that U.N. agencies and the Red Cross will play a role.

The ship in Cyprus is expected to take two to three days to arrive at an undisclosed location. The World Central Kitchen spokesperson said that construction work began Sunday on the jetty for it at an undisclosed location in Gaza.

A member of the charity said on X, formerly Twitter, that once the ship鈥檚 barge reaches Gaza, aid would be offloaded by a crane, placed on trucks and driven to northern Gaza, which has been largely cut off from aid shipments and was the first focus of Israel鈥檚 military offensive.

Israel declared war on Oct. 7 after Hamas militants killed about 1,200 people, mostly civilians, and took 250 hostages. Israel鈥檚 air and ground offensive has devastated large parts of Gaza and displaced about 80% of the population of 2.3 million.

The U.S. and regional mediators Egypt and Qatar had hoped to have a six-week cease-fire in place by Ramadan, but Hamas is holding out for assurances that a temporary truce will lead to an end of hostilities.

The truce would have seen Hamas release some Israeli hostages, Israel release some Palestinian prisoners and aid groups be given access for a major influx of assistance into Gaza.

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-Samy Magdy reported from Cairo. Menelaos Hadjicostis contributed to this report from Nicosia, Cyprus.

Wafaa Shurafa And Samy Magdy, The Associated Press