It is sold by IMPA (International Marine Purchasing Association) to marine purchasers, suppliers, and logistics companies. Legally, a free, full, official PDF download is not available from authorized sources.
However, I need to be upfront with you:
Would you like help drafting a polite email to IMPA requesting a trial or discounted access? free download impa catalogue pdf
I understand you're looking for the (often called the IMPA catalogue) in PDF format for free. It is sold by IMPA (International Marine Purchasing