The Jaskółka class was a versatile design which allowed the ships to serve in the role of either a minesweeper, small minelayer or a sub chaser.
All were named after birds, therefore the class was nicknamed: ptaszki (English: birdies).
These ships, built during the later part of World War I and bought by Poland during the early 20s, were already worn out by the 1930s so the Polish Navy required a replacement.
The Modlin shipyard offered a design for the new class of minesweepers which was accepted.
After they entered service they proved to be a good design so a further two were ordered in the mid 30s.