Inquiry Regarding Microcontroller (STM32F4) for IR Communication in Marine Applications

[Ozone]

Better approach ST sales directly, or a local ST representative.
A user forum is not the right place.

[Andrew Neil]

You didn't say what your enquiry is!

Also, "IR Communication in Marine Applications" is very vague.

• What kind of "IR Communication", exactly?
• What kind of "Marine Applications", exactly?
• What will it need to do besides the "IR Communication"?

As @Ozone said, probably best to talk to an FAE:

https://www.st.com/content/st_com/en/contact-us.html

You can review the STM32F4 family & support here: 

https://www.st.com/en/microcontrollers-microprocessors/stm32f4-series.html

See also:

https://www.st.com/en/development-tools/st-mcu-finder-pc.html

https://www.st.com/en/development-tools/stm32-finder.html

Also, Distributors often parametric search facilities - where you put in your requirements, it it will find matching parts.