Searching for a field microphone to record motor sounds

Dear,

I am working on a project to detect boat sounds in nature reserves in real-time. The range has to be from very low frequencies. I do this with a raspberry pi 5 and an HiFiberry DAC+ ACD PRO. I want quick and easy prototyping and good recording quality, for a low budget :)

Does some of you have recommendations about what microphone would be a good option?