Opinion for the Court filed by Circuit Judge ROGERS.
The' Maritime Administration has a longstanding interpretation of the Merchant Marine Act of 1936 under which any vessel built with the aid of a “construction-differential subsidy” from the federal government, and thus limited at least initially to service in foreign trade only, can enter domestic trade after the statutorily defined economic life of the vessel expires. OSG Bulk Ships, Inc. challenged that interpretation in the district court, which granted summary judgment to the defendant agency and several private defendant-intervenors after concluding that, especially in light of a Supreme Court decision that involved a closely related issue, the agency’s interpretation was unobjectionable. We affirm.
I.
Because building ships and manning them in the United States was and remains more expensive than in other countries, Congress enacted the Merchant Marine Act of 1920 (commonly known as “the. Jones Act”) and the Merchant Marine Act of 1936 (“the 1936 Act”) in an attempt to protect the American shipping industry against foreign competition.
See Independent U.S. Tanker Owners
American ships operating in trade between foreign and domestic ports do not enjoy the same protection from international competition, but in the 1936 Act, Congress instituted two types of government subsidies in an attempt to make these vessels competitive in the international market: the operating-differential subsidy (“ODS”) and the construction-differential subsidy (“CDS”). See id. §§ 1151,1171. Under the ODS program, the Secretary of Transportation (“the Secretary”) can grant subsidies to American vessels in foreign trade to offset the higher operating costs these vessels generally face compared to their international competitors. See id. § 1171. Under the CDS program, the Secretary can enter into contracts to subsidize American shipyards’ construction of new vessels to be operated under the American flag. See id. § 1154.
Because vessels built with the aid of the CDS program would have an unfair advantage if allowed to compete directly with the unsubsidized Jones Act ships in domestic trade, section 506 of the 1936 Act limits CDS-built vessels to operation “exclusively in foreign trade,” with two exceptions. Id. § 1156. 1 First, CDS-built vessels can make certain domestic stops on bona fide foreign voyages. See id. Second, the Secretary may consent to allow CDS-built vessels to engage in domestic trade for temporary periods up to six months in any year. See id. In each case, however, the owner of a CDS-built vessel using one of these exceptions must repay to the government a portion of the CDS depending on the time spent in domestic trade compared to the vessel’s economic life* which is established by statute as twenty years for tankers and twenty-five years for vessels carrying dry goods. See id.; Pub.L. No. 86-518, §§ 1, 3, 74 Stat. 216, 216 (1960); H.R.Rep. No. 86-1744, at 5-8 (1960), reprinted in 1960 U.S;C.C.A.N. 2383, 2386-87.
The meaning of section 506 cannot be understood without reference to
Seatrain Shipbuilding Corp. v. Shell Oil Co.,
The policy upheld in Seatrain reflected MarAd’s longstanding view that, under the 1936 Act, when the owner of a CDS-built vessel has repaid the government for the value of the subsidy — through monetary repayment, service in the foreign shipping market for the vessel’s economic lifetime, or a combination of the two — there is no longer any need to restrict that vessel to service in foreign trade only. Correspondingly, MarAd has allowed CDS-built vessels to enter the domestic market in the middle of their economic lives upon repayment of a sum equal to the unamortized value of the CDS for the remaining portion of the ship’s economic life. In addition, MarAd has long made known its position that the section 506 foreign-trade-only restriction would lapse, even without payment, at the end of CDS-built vessels’ economic lives, because at that time the CDS debt to the government had been repaid in full through service in foreign trade. Sea-train did not invalidate these practices, nor has the agency retreated from its general interpretation of section 506 since that time.
II.
OSG Bulk Ships, Inc. (“OSG”) owns eleven non-CDS tankers carrying oil in domestic trade and leases two more. Many other companies built tankers with the aid of the CDS program between 1973 and 1984; the first of these reached the end of its economic lifetime on August 8, 1993, with thirty more scheduled to do so by the year 2004. On January 1, 1994, with MarAd’s acquiescence, the Coronado became the first CDS-built tanker to enter the domestic market and begin to compete directly with OSG’s unsubsidized tankers.
In July 1993, before the economic lifetime of any CDS-built vessel had expired, OSG sought to have the agency reconsider its interpretation of section 506. Approving the permanent release of CDS-built vessels whose economic lives had expired, OSG argued, would be inconsistent with the plain language of the statute and its underlying purposes. In response, several other companies urged the agency not to alter its interpretation. The agency concluded that its interpretation of the 1936 Act was sound, and reported its decision to reaffirm that interpretation in a series of letters dated March 31,1994, and April 1,1994.
On .January 3, 1994, three months before MarAd. sent these letters, OSG filed suit against the agency, challenging. MarAd’s interpretation of section 506 under which CDS-built vessels could enter the domestic market after their economic lives had passed. Two private companies thereafter intervened as plaintiffs
4
and nine as defendants.
5
The dis-
III.
While our review of the grant of summary judgment is
de novo, see Tao v. Freeh,
The jurisdictional issue arises as a result of appellee’s contention that the district court did not even have jurisdiction to hear the case in the first place.
6
Appellees characterize OSG’s complaint as a challenge to MarAd’s decision not to enforce the section 506 ban on domestic trade by CDS-built vessels in certain instances.
Heckler v. Chaney,
Turning to the merits, we adopt the analysis of the district court insofar as it considered whether in section 506 Congress had decided the issue, in which event the agency must adhere to the unambiguous expression of congressional intent, and if not, whether the agency’s interpretation of the act is reasonable in light of the statutory policies and purposes.
See Chevron,
In
Seatrain,
the Supreme Court upheld a policy under which the agency allowed a CDS-built vessel to enter the domestic market upon repayment of the CDS to the government.
See Seatrain,
OSG’s contention that congressional enactments after
Seatrain
show that Congress meant to answer that question in the negative is meritless. In 1987, in section 505 of the Supplemental Appropriations Act, Pub.L. No. 100-71, 101 Stat. 391 (1987), Congress forbade MarAd from expending any funds “for the permanent release of vessels from the restrictions in section 506 of [the 1936 Act].” Supplemental Appropriations Act § 505.
8
Contrary to OSG’s contention, nothing in this section precludes MarAd. from interpreting the 1936 Act to allow the permanent release of CDS-built vessels into the domestic market. Mere appropriations acts, which on their surface only address funding matters, do not make changes in substantive law unless they do so explicitly.
See Tennessee Valley Auth. v. Hill,
Neither can OSG find support for its view that Congress intended to bar policies such as that adopted by MarAd in this case in the Maritime Security Act of 1996, Pub.L. No. 104-239, 110 Stat. 3133. In that act, Congress amended the 1936 Act to add a new section 512 providing that restrictions under section 506 do not apply to CDS-built
liner vessels
after “the expiration of the 25-year period beginning on the date of the original delivery of the vessel from the shipyard.” 46 U.S.C.A. app. § 1162 (Supp.1997).
10
OSG
Absent congressional indication regarding whether the foreign-trade-only requirement of section 506 lapses for CDS-built vessels at the end of their economic lives, the only question is whether MarAd’s interpretation of the 1936 Act in this regard was reasonable.
See Chevron,
As
Seatrain
establishes, MarAd’s interpretation does not conflict with the plain language of the statute. The 1936 Act does not directly address when the agency can grant CDS-built vessels permanent releases from the section’s restrictions.
See Seatrain,
Hence, we need only elaborate on the district court’s analysis by emphasizing, in response to OSG’s economic arguments, that MarAd’s interpretation accords well with the general purposes of the 1936 Act. In the act, Congress explicitly enumerated these purposes, the primary one being this: “It is declared to be the policy of the United States to foster the development and encourage the maintenance' of ... a merchant marine.” 46 U.S.C. app. § 1101 (1988);
11
see also Liberty
Undoubtedly, a further purpose of the 1936 Act and section 506 in particular is “to protect unsubsidized U.S. shipowners from the unfair competition of subsidized U.S. shipowners,”
Liberty Maritime Corp.,
This view of the competitive equities is reasonable: OSG.has given no compelling reason why it is inherently unfair to admit a CDS-built vessel into the domestic market. Although allowing subsidized vessels to compete directly with unsubsidized vessels would be unfair if there were no offsetting factor to balance competitive conditions, the benefit of the subsidy is counterbalanced by the restriction of CDS-built vessels to the foreign market through their economic lives.
13
By contrast, the Jones Act fleet is free at all times to exploit economic opportunities in both domestic and foreign markets, and MarAd’s conclusion that the competition between Jones Act vessels and CDS-built vessels whose economic lives have expired will not be unfair, is reasonable. The mere fact that the CDS-built vessels .once had a subsidy could not be significant or the Supreme Court would not have concluded in
Seatrain
that, “at least where repayment of the CDS includes some amount reflecting capital costs which would have been incurred had no subsidy been available, such a transaction merely permits a once subsidized vessel to enter the domestic trade on a.footing equal to that of vessels already in that trade.”
Seatrain,
OSG contends also that the interpretation does not further certain other goals of the 1936 Act, such as the goals of ensuring that the merchant marine remain modern and, concomitantly, stimulating the domestic shipbuilding industry. ’
See
46 U.S.C. app. §§ 1101, 1157, 1158, 1160 (1988). OSG claims that MarAd’s interpretation conflicts with these statutory purposes in that it does not take old ships out of service at the end of their economic lives, but actually encourages them to remain active. Again, however, MarAd’s interpretation of section 506 does not act counter to these goals because CDS-built vessels whose economic lives have expired are, for all relevant purposes, identical to those built without subsidization. No one would suggest that MarAd should forcibly retire all vessels after they reach a certain age, although doing so would ensure a modern fleet and stimulate domestic shipbuilding. The way the agency meets these goals is a matter to which it is entitled to some discretion. Indeed, given the proper level of deference we owe to MarAd, the agency’s interpretation need not further
every
statutory purpose in the 1936 Act. MarAd’s approach furthers the overall purposes of the statute, and OSG has presented no reason to disturb the agency’s judgment about how best to weigh the individual purposes to effectuate Congress’s overall goals.
See Continental Air Lines, Inc. v. Department of Tramp.,
Finally, we conclude as well that MarAd’s explanation of why its interpretation of the 1936 Act was consistent with the statutory purposes, though cursory, was sufficient.
Cf. id.
at 1451-53. OSG insists that MarAd’s pronouncements of the interpretation at issue in this case were cursory and circular and inadequately addressed the policies and purposes of the 1936 Act. To the contrary, as the district court concluded, “[t]he agency has considered and explained its interpretation of Section 506 in a detailed and reasoned fashion consistent with the statutory purpose.”
OSG Bulk Ships,
Given the instruction of
Seatrain
and the absence of later congressional directive, Mar-Ad’s discretion to award permanent releases to the section 506 foreign-trade-only restriction is extremely broad: as long as the agency does not allow CDS-built vessels to take
Notes
. Section 506 provides:
Every owner of a vessel for which a construction-differential subsidy has been paid shall agree that the vessel shall be operated exclusively in foreign trade, or on a round-the-world voyage, or on a round voyage. from the west coast of the United States to a European port or ports which includes intercoastal ports of the United States, or a round voyage from the Atlantic coast of the United States to the Orient which includes intercoastal ports of the United States, or on a voyage in foreign trade on which the vessel may stop at the State of Hawaii, or an island possession or island territory of the United States, and that if the vessel is Operated in the domestic trade on any of the above-enumerated services, he will pay annually to the Secretary, of Transportation that proportion of one-twenty-fifth of the construction-differential subsidy paid for such vessel as the gross revenue derived from the domestic trade bears to,the gross revenue derived from.the entire voyages completed during the preceding year. The Secretary may consent in writing to the temporary transfer of such vessel to service other than the service covered by such agreement for periods not exceeding six months in any year, whenever the Secretary may determine that such transfer is necessary or appropriate to carry out the purposes of this chapter. Such consent shall be conditioned upon the agreement by the owner to pay to the Secretary, upon such terms and conditions as he may prescribe, an amount which bears the same proportion to the construction-differential subsidy paid by the Secretary as such temporary period bears to the entire economic life of the vessel. No operating-differential subsidy shall be paid for the operation of such vessel for such temporary period.
46 U.S.C. app. § 1156.
. MarAd is an agency within the Department of Transportation charged with oversight of the United States merchant marine, including "[ajwarding and administering construction-differential subsidy contracts and operating-differential subsidy Contracts to aid the American merchant marine.” 49 C.F.R. § 1.4(j)(l)-(2) (1997).
. The Court noted in particular that permanent releases into domestic trade do not carry the same potential for making competition unfair as temporary releases do: while a CDS-built vessel unrestrained in its ability to take temporary jaunts into the Jones Act fleet’s preserve would be "capable of taking advantage of every shift in trade and profitability, skimming the cream and leaving what remains to the less mobile,” the permanent release of a CDS-built vessel "irrevocably locates the vessel in the unsubsidized fleet and thus poses no danger of a supercompetitor skimming the cream from each market.”
Seatrain,
. Attransco, Inc. and Matson Navigation Co., Inc. were the intervening plaintiffs in the district court, but these companies are not parties to this appeal.
. BP Oil Shipping Co., Chestnut Shipping Co., Margate Shipping Co., and Mormac Marine Transport, Inc, were defendant-intervenors be
. Notably, only the private appellees press this argument; the agency itself does not.
. OSG contends that review under the arbitrary- or-capricious standard of section 706(2)(A) of the APA, 5 U.S.C. § 706(2)(A) (1988), is appropriate instead of
Chevron,
but this is incorrect. True enough, when Congress has “explicitly left a gap for the agency to fill, there is an express delegation of authority to the agency to elucidate a specific provision of the statute by regulation” and ensuing regulations are reviewed pursuant to the arbitrary-or-capricious standard.
Chevron,
.Section 505 provides:
None of the funds appropriated or made available by this or any other Act or otherwise appropriated or made available to the Secretary of Transportation or the Maritime Administrator for purposes of administering the Merchant Marine Act, 1936, as amended (46 U.S.C. 1101 et seq.), shall be used by the United States Department of Transportation or the United States Maritime Administration to propose, promulgate, or implement any rule or regulation, or, with regard to vessels which repaid subsidy pursuant to the rule promulgated by the Secretary May 3, 1985 and vacated by Order of the U.S. Court of Appeals for the D.C. Circuit January 16, 1987, conduct any adjudicatory or other regulatory proceeding, execute or perform any contract, or participate in any judicial action with respect to the repayment of construction differential subsidy for the permanent release of vessels from the restrictions in section 506 of the Merchant Marine Act, 1936, as amended: Provided, That such funds may be used to the extent' such expenditure relates to a rule which conforms to statutory standards hereafter enacted by Congress.
Supplemental Appropriations Act § 505.
. The legislative history behind this particular provision is quite sparse, but what there is implies that Congress was attempting to accommodate this court’s decision in
Independent U.S. Tanker Owners Committee v. Dole,
. As codified, section 512 provides:
Notwithstanding any other provision of law or contract, all restrictions and requirements under sections 1153, 1156, and 1212 of this Appendix applicable to a liner vessel constructed, reconstructed, or reconditioned with the aid of construction-differential subsidy shall terminate upon.the expiration of the 25-year period beginning on the date of the original delivery of the vessel from the shipyard.
46 U.S.C.A. app. § 1162.
. Section 1101 provides:
It is necessary for the national defense and development of its foreign and domestic commerce that the United States shall have a merchant marine (a) sufficient to carry its domestic water-borne commerce and a substantial portion of the waterborne export and import foreign commerce of the United States and to provide shipping service essential for maintaining the flow of such domestic and foreign water-borne commerce at all times, (b) capable of serving as a naval and military auxiliary in time of war or national emergency, (c) owned and operated under the United States flag by citizens of the United States, insofar as may be practicable, (d) composed of the best equipped, safest, and most suitable types of vessels, constructed in the United States and manned with a trained and efficient citizen personnel, and (e) supplemented by efficient facilities for shipbuilding and ship repair. It is declared to be the policy of the United States to foster the development and encourage the maintenance of such a merchant marine.
. Memorandum from Graydon L. Andrews, Acting General Counsel, Maritime Administration, to Maritime Subsidy Board, Maritime Administration 5 (July 28, 1964).
. Of course, these vessels can enter the domestic market under the limited exceptions in section 506, but only upon proportional repayment of their CDS. See 46 U.S.C. app. § 1156.
. This reasoning was presaged by Judge Bazel-on’s dissent in the decision of this court reversed by the
Seatrain
Court.
See Alaska Bulk Carriers, Inc. v. Kreps,
. In an unpersuasive alternative argument, OSG insists that MarAd could not adopt a general policy, but instead should have to weigh, upon every application of a CDS-built vessel to enter the domestic fleet, whether such entry would be consistent with the purposes and policies of the 1936 Act. This argument is evidently (and mistakenly) based on the declaration in
Seatrain
that the Secretary had broad discretion whether to allow the particular permanent release in question in that case.
See Seatrain,
