To ensure the possibility of offshore shipping of a liquid medium,
primarily oil, from an onshore tank farm into sea-going tankers in the
winter time in the ice conditions by ensuring both mooring to an offshore
terminal and single-point mooring of a tanker at any time, without
depending on the dominating wind and sea condition, in a direction most
convenient for it with the possibility of its roundabout turning, with
the subsequent servicing of it by transporting a liquid medium into such
a tanker the following transformations have been made: a known ice
breaker (1) is provided with: a diving station (5) installed on its deck
(3), the diving station being provided with a diving trunk (6) made in
the hull (2) of the ice-breaker (1), a device for the protection of a
flexible hose (8) of an underwater pipeline against ice action, the
device being made, according to the first embodiment, in the form of a
cylinder (7) provided with guides (13) for moving in a guiding trunk (10)
made in the stern side of the hull (2). According to the second
embodiment the ice-breaker (1) is provided with a device for the
protection of the flexible hose (8) of the underwater pipeline against
ice action, the device being made in the form of a pontoon (15) provided
with a trunk (16) for servicing the flexible hose (8) and installed in
the travel position on the deck (4); a system of single-point mooring and
servicing of ships is provided with the ice-breaker (1), which is claimed
as an invention, for ensuring offshore shipping of oil, a mooring line
and a hose for transporting a liquid medium are made as a single
hose-mooring line (28); a method of single-point mooring and servicing of
ships, primarily tankers (9) is carried out with the use of the claimed
ice-breaker (1) and the hose-mooring line (28).