It's been a while.
I've been able to play with the above fix for a long time, but it seems that as of 10.2.0 aslain_alt_markers has changed to ■■■, so I made my own changes.
I have attached the modified file in case there are others who need this information.
https://forum.worldofwarships.ru/topic/104369-0791-alt_markers-улучшаем-иконки-кораблей-ластомер/
This link, which opens from aslain information, is no longer displayed.
Where can I find official support for alt_markers?
settings.xml