; (11) may provide services and facilities, at reasonable prices, towards the servicing and maintenance of the Sea Routes as well as vessels and visitors using the Bering Strait and Arctic Ocean Routes; (12) may participate with partner development corporations of Arctic or other nations regarding the ownership and operation of a tolling company, and may lease icebreakers, and enlist and return assets if the United States portion of the revenue from the tolls charged to the users of any services provided under this section is applied solely towards the reinvestment in infrastructure and preservation of the surrounding ecosystem as specified in paragraph (10); and (13) shall be credited with amounts received from any of the activities authorized under paragraphs (10) and (11). 6. Bonds; issuance; maturity; redemption; interest