As filed with the U.S. Securities and Exchange Commission on May 23, 2025. Registration No. 333-285075 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 2 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Blue Water Acquisition Corp. III (Exact name of registrant as specified in its charter) Cayman Islands 6770 33-2301550 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employ ...