Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * TC Group Cayman Investment Holdings, L.P.	2. Date of Event Requiring Statement (MM/DD/YYYY) 3/13/2018	3. Issuer Name and Ticker or Trading Symbol Seaspan CORP [SSW]
(Last)        (First)        (Middle) C/O WALKERS, CAYMAN CORPORATE CENTER, 27 HOSPITAL ROAD	4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                            ___ X ___ 10% Owner _____ Officer (give title below)          _____ Other (specify below)
(Street) GEORGE TOWN GRAND CAYMAN, E9 KY1-9008        (City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _ X _ Form filed by More than One Reporting Person

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)
Series D Preferred Shares	1869200	I	See footnotes   (1) (2) (3) (4)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		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

Explanation of Responses:
(1)	Includes: (i) 47,028 shares of Series D Preferred Shares held by CP V Coinvestment A Cayman, L.P.; (ii) 9,628 shares of Series D Preferred Shares held by CP V Coinvestment B Cayman, L.P.; (iii) 17,423 shares of Series D Preferred Shares held by CAP III Co-Investment, L.P.; (iv) 1,363,936 shares of Series D Preferred Shares held by Carlyle Partners V Cayman TE, L.P.; (v) 356,417 shares of Series D Preferred Shares held by CAP III Maritime AIV, L.P.; and (vi) 74,768 shares of Series D Preferred Shares held by Carlyle-Eight Finance Asia Co-Investment Partners, L.P.
(2)	Carlyle Group Management L.L.C. is the general partner of The Carlyle Group L.P., which is a publicly traded entity listed on NASDAQ. The Carlyle Group L.P. is the managing member of each of Carlyle Holdings II GP L.L.C. and Carlyle Holdings III GP Management L.L.C.
(3)	Carlyle Holdings II GP L.L.C. is the general partner of Carlyle Holdings II L.P., which is the general partner of TC Group Cayman Investment Holdings, L.P., which is the general partner of TC Group Cayman Investment Holdings Sub L.P., which is the sole member of each of CP V General Partner, L.L.C. and CAP III, L.L.C. CP V General Partner, L.L.C. is the general partner of TC Group V Cayman, L.P., which is the general partner of each of CP V Coinvestment A Cayman, L.P. and CP V Coinvestment B Cayman, L.P. CAP III, L.L.C. is the general partner of CAP III General Partner, L.P., which is the general partner of CAP III Co-Investment, L.P.
(4)	Carlyle Holdings III GP Management L.L.C. is the general partner of Carlyle Holdings III GP L.P., which is the sole member of Carlyle Holdings III GP Sub L.L.C., which is the general partner of Carlyle Holdings III L.P., which is the general partner of TC Group Cayman L.P., which is the general partner of TC Group Cayman Sub, L.P., which is the sole shareholder of each of CP V S3 GP, Ltd. and CAP III S3 Ltd. CP V S3 GP, Ltd. is the general partner of TC Group V Cayman S3, L.P., which is the general partner of Carlyle Partners V Cayman TE, L.P. CAP III S3 Ltd. is the general partner of CAP III General Partner S3, L.P., which is the general partner of each of CAP III Maritime AIV, L.P. and Carlyle-Eight Finance Asia Co-Investment Partners, L.P.

Remarks: Due to the limitations of the electronic filing system . Carlyle Group Management L.L.C., The Carlyle Group L.P., Carlyle Holdings II GP L.L.C., Carlyle Holdings II L.P., Carlyle Holdings III GP Management L.L.C., Carlyle Holdings III GP L.P., Carlyle Holdings III GP Sub L..L.C., Carlyle Holdings III L.P., TC Group Cayman L.P., TC Group Cayman Sub, L.P., CP V S3 GP, Ltd, TC Group V Cayman S3, L.P., Carlyle Partners V Cayman TE, L.P., CAP III S3 Ltd, CAP III General Partner S3, L.P., CAP III Maritime AIV, L.P., and Carlyle-Eight Finance Asia Co-Investment Partners, L.P. are filing a separate Form 3.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
TC Group Cayman Investment Holdings, L.P. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
TC Group Cayman Investment Holdings Sub L.P. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CP V General Partner, L.L.C. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
TC Group V Cayman, L.P. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CP V Coinvestment A Cayman, LP C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CP V Coinvestment B Cayman, LP C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CAP III, L.L.C. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CAP III General Partner, L.P. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X
CAP III CO-INVESTMENT, L.P. C/O WALKERS, CAYMAN CORPORATE CENTER 27 HOSPITAL ROAD, GEORGE TOWN GRAND CAYMAN, E9 KY1-9008		X

Signatures
TC GROUP CAYMAN INVESTMENT HOLDINGS, L.P, By: Carlyle Holdings II L.P., its general partner, By: /s/ William E. Conway, Jr., Name: William E. Conway, Jr., Title: Co-Executive Chairman & Co-Chief Investment Officer		4/20/2018
** Signature of Reporting Person		Date
TC GROUP CAYMAN INVESTMENT HOLDINGS SUB L.P., By: TC Group Cayman Investment Holdings, L.P., its general partner, By: Carlyle Holdings II L.P., its general partner, By: /s/ William E. Conway, Jr., Title: Co-Executive Chairman & Co-CIO		4/20/2018
** Signature of Reporting Person		Date
CP V General Partner, L.L.C., By: /s/ William E. Conway, Jr., Name: William E. Conway, Jr., Title: Co-Executive Chairman & Co-Chief Investment Officer		4/20/2018
** Signature of Reporting Person		Date
TC Group V Cayman, L.P., By: /s/ Jeremy W. Anderson, Name: Jeremy W. Anderson, Title: Authorized Person		4/20/2018
** Signature of Reporting Person		Date
CP V Coinvestment A Cayman, L.P., By: TC Group V Cayman, L.P., its general partner, By: /s/ Jeremy W. Anderson, Name: Jeremy W. Anderson, Title: Authorized Person		4/20/2018
** Signature of Reporting Person		Date
CP V Coinvestment B Cayman, L.P., By: TC Group V Cayman, L.P., its general partner, By: /s/ Jeremy W. Anderson, Name: Jeremy W. Anderson, Title: Authorized Person		4/20/2018
** Signature of Reporting Person		Date
CAP III, L.L.C., By: TC Group Cayman Investment Holdings Sub L.P., By: TC Group Cayman Investment Holdings, L.P., its general partner, By: Carlyle Holdings II L.P., its general partner, By: /s/ William E. Conway, Jr.		4/20/2018
** Signature of Reporting Person		Date
CAP III General Partner, L.P., By: /s/ Norma R. Kuntz, Name: Norma R. Kuntz, Title: Authorized Person		4/20/2018
** Signature of Reporting Person		Date
CAP III Co-Investment, L.P., By: CAP III General Partner, L.P., its general partner, By: /s/ Norma R. Kuntz, Name: Norma R. Kuntz, Title: Authorized Person		4/20/2018
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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