Polish authorities have given a $3,000 fine to a visiting boat operated by a Dutch abortion rights group.
The boat arrived on Sunday without receiving permission to dock
"The boat [the Langenort] breached procedures for entering the port and did not obey the orders of the port commander," Kazimierz Undro, the commander of Wladyslawowo port said.
"I asked it to move to another part of the port where it would be sheltered from a group of people who were hostile to its
arrival," he added.
Protesters flung red paint and eggs at the ship Dutch ship when it entered the port on Sunday.
The Polish feminist who organised the boat's visit, Justyna Wlodarczyk, said organisers were hoping to be allowed to pay a deposit and leave.
"According to our legal experts we have the right to pay a guarantee and go to sea, while appealing the decision," she said.
But Mr Undro said: "The boat will not have the right to leave the port if it has not paid the fine [of 12,000 zlotys or 2,700 euros]."
The boat - dubbed a floating abortion clinic by Polish demonstrators - arrived in the port on Sunday "to offer Polish women advice on contraceptives."
According to our legal experts we have the right to pay a guarantee and go to sea
Justyna Wlodarczyk, boat visit organiser
It is crewed by members of the Netherlands-based Women on Waves group who have previously offered abortion pills to women after leaving nations with strict anti-abortion laws for international waters.
The use of abortion pills is banned in Poland. Under Polish law, terminations are only allowed when the pregnancy threatens a woman's mental or physical health, the foetus is damaged or in the cases of rape or incest.
"RU-486 [abortion] pills were sealed during a search of the boat on Monday because importing them, distributing them and using them is illegal in Poland," customs spokeswoman Jolanta Twardowska said.
The ship's visit angered Poland's influential Roman Catholic Church and anti-abortion groups that have asked prosecutors to investigate if it violates Poland's law.
In 2001, Women on Waves took another boat to predominantly Roman Catholic Ireland, but called off plans to offer RU-486 following last-minute legal and logistical complications.