Initial Statement of Beneficial Ownership (Form 3)

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * ANGELO MARK 2. Date of Event Requiring Statement (Month/Day/Year) 11/25/2025 3. Issuer Name and Ticker or Trading Symbol Blue Water Acquisition Corp. III [BLUW] (Last) (First) (Middle) C/O BLUE WATER ACQUISITION CORP. III, 1012 SPRINGFIELD AVENUE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) MOUNTAINSIDE, NJ 07092 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Class A Ordinary Shares 430,000(1)(2) I See Footnote(2)

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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Ordinary Shares	(3)	(3)	Class A Ordinary Shares	6,325,000(1)(2)	(3)	I	See Footnote(2)
Private Placement Warrants	(4)	(4)	Class A Ordinary Shares	215,000(1)(2)	$11.5	I	See Footnote(2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ANGELO MARK C/O BLUE WATER ACQUISITION CORP. III 1012 SPRINGFIELD AVENUE MOUNTAINSIDE, NJ 07092	X	X
Yorkville BW Acquisition Sponsor, LLC C/O BLUE WATER ACQUISITION CORP. III 1012 SPRINGFIELD AVENUE MOUNTAINSIDE, NJ 07092		X

Signatures

/s/ Mark Angelo		12/04/2025
**Signature of Reporting Person		Date
/s/ Mark Angelo, Yorkville BW Acquisition Sponsor, LLC		12/04/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Yorkville BW Acquisition Sponsor, LLC (the "Sponsor") acquired 6,325,000 Class B ordinary shares and 430,000 private placement units (the "Private Units"), with each Private Unit consisting of one Class A ordinary share and one-half of one warrant, with each whole warrant entitling the holder to purchase one Class A ordinary share, at an exercise price of $11.50 per share (a "Private Placement Warrant"), pursuant to a purchase agreement, dated November 25, 2025, by and between the Sponsor, the Issuer, and Blue Water Acquisition III LLC. These 6,325,000 Class B ordinary shares and 430,000 Private Units, including the 430,000 Class A ordinary shares and 215,000 Private Placement Warrants that comprise the Private Units, are held by the Sponsor.
(2)	YA II PN, Ltd. ("YA II PN") is a member and the sole manager of the Sponsor and holds voting and investment discretion over the securities held by the Sponsor. YA II PN is managed by Yorkville Advisors Global, LP ("Yorkville LP"), whose General Partner is Yorkville Advisors Global II, LLC ("Yorkville LLC"). All investment decisions for YA II PN are made by Mark Angelo, President and Managing Member of Yorkville LLC, and, as President and Managing Member of Yorkville LLC, Mr. Angelo may be deemed to have beneficial ownership of the Class B ordinary shares and Private Units, including the Class A ordinary shares and Private Placement Warrants that comprise the Private Units, held by the Sponsor. Mr. Angelo disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest he may have therein, directly or indirectly.
(3)	As described in the Issuer's registration statement on Form S-1, as amended (File No. 333-285075) under the heading "Description of Securities-Founder Shares", the Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination or earlier at the option of the holder on a one-for-one basis, subject to certain adjustments described therein and have no expiration date.
(4)	As described in the Issuer's registration statement on Form S-1, as amended (File No. 333-285075) under the heading "Description of Securities-Warrants," the Private Placement Warrants will become exercisable on the later of 12 months from the closing of the Issuer's initial public offering and 30 days after the completion of the Issuer's initial business combination, and shall expire five years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation, subject to certain terms and conditions described therein.

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