Israeli occupation authorities have banned, for the 19th day in a row, the entry of basic goods and humanitarian aid, via Kerem Shalom crossing, the sole commercial crossing with Gaza, MP Jamal al-Khudari, head of the People's Committee to Face the Siege, stated on Sunday.
The motor vessel, named Al Awda, or The Return, was contacted Sunday afternoon by Israel's Navy about 49 nautical miles from the port at Gaza City in worldwide waters and warned to stop or prepare to be boarded, the Freedom Flotilla Coalition said on its website. Regev referred to the IDF derogatorily as the Israeli Occupation Force.
Israel has imposed a blockade on Gaza for more than a decade, saying the aim is to prevent weapons and other military equipment getting in.
Al Awda is sailing under a Norwegian flag, carrying 22 people and a cargo of medical supplies, according to the website.
Another 14-year-old Palestinian was killed by Israeli gunfire in Rafah, authorities said. "The activity ended without any unusual incidents". Two years ago, 13 women, including Northern Ireland's Nobel Peace laureate Mairead Maguire headlined a "Women's Boat to Gaza" before being some 35 nautical miles off the Gaza coast and detained.
The activists stressed that they would resist Israel's expected takeover of the boats in non-violent ways, reports said.
Other attempts to run the Israeli blockade included a 2016 women's boat with 13 passengers including Nobel Peace Prize victor Mairead Maguire of Northern Ireland.
Israel maintains its blockade to keep material it believes could be used for military purposes from entering the coastal enclave, run by the militant Hamas.
Palestinians want to establish a state in the Gaza Strip, the West Bank and East Jerusalem, territories that Israel took control of in the 1967 Middle East war.
Since the demonstrations began, the Israeli army has killed at least 157 Palestinian protesters and wounded more than 16,000, according to Gaza's health ministry.
It has several times called at the Harbor, located on the transportation route, and also took part in events in support of the so-called "March of return" of Palestinians.
In 2010, an attempt turned deadly when Israeli soldiers stormed the Turkish Mavi Marmara flotilla, killing 10 Turkish nationals.
There have been two severe military flare-ups between the two sides in recent weeks as well.