Ships of different orders of size are, from the economic point of view, no longer suitable for the carriage of oil in general, but only for specific trade routes or special transport requirements.
iinqanawa ezinemilinganiselo eyahlukeneyo, ngokwezoqoqosho, azinakuphinda ukuthwala i-oyile jikelele, kodwa zingasetyenziswa kwiindlela zorhwebo ezikhethiweyo, okanye imiqathango yezothutho ekhethekileyo.