	Successor
	December 31,			December 31,
(In thousands)	2018			2017
Secured notes:
8.00% Secured notes due August 2022	$	349,954			350,000
Troms Offshore borrowings:
NOK denominated notes due May 2024		12,241			14,054
NOK denominated notes due January 2026		22,988			25,965
USD denominated notes due January 2027		22,116			23,345
USD denominated notes due April 2027		24,157			25,463
	$	431,456			438,827
Debt premium and discount, net		7,548			9,333
Less: Current portion of long-term debt		(8,568	)		(5,103	)
Total long-term debt	$	430,436			443,057

We may from time to time seek to retire or purchase our outstanding debt through cash purchases and/or exchanges for equity securities, in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. The amounts involved may be material.

Pursuant to the terms of the Plan, we entered into an indenture (the “Indenture”) by and among our, the wholly-owned subsidiaries named as guarantors therein (the “Guarantors”), and Wilmington Trust, National Association, as trustee and collateral agent (the “Trustee”), and issued $350 million aggregate principal amount of our 8.00% Senior Secured Notes due 2022 (the “Secured Notes”).

The Secured Notes will mature on August 1, 2022. Interest on the Secured Notes accrues at a rate of 8.00% per annum and are payable quarterly in arrears on February 1, May 1, August 1, and November 1 of each year in cash, beginning November 1, 2017. The Secured Notes are secured by substantially all of our assets and our Guarantors.

As of December 31, 2018, the fair value (Level 2) of the Secured Notes was $359.4 million.

The Secured Notes have quarterly minimum trailing twelve months interest coverage requirement that begins June 30, 2019. Minimum liquidity requirements and other covenants are set forth in the Indenture and are in effect from July 31, 2017. The Indenture also contains certain customary events of default and a make-whole provision.

Until terminated under the circumstances described in this paragraph, the Secured Notes and the guarantees by the Guarantors will be secured by the Collateral (as defined in the Indenture) pursuant to the terms of the Indenture and the related security documents. The Trustee’s liens upon the Collateral and the right of the holders of the Secured Notes to the benefits and proceeds of the Trustee’s liens on the Collateral will terminate and be discharged in certain circumstances described in the Indenture, including: (i) upon satisfaction and discharge of the Indenture in accordance with the terms thereof; or (ii) as to any of our Collateral or the Guarantors that is sold, transferred or otherwise disposed of by us or the Guarantors in a transaction or other circumstance that complies with the terms of the Indenture, at the time of such sale, transfer or other disposition.

We are obligated to offer to repurchase the Secured Notes at par in amounts that generally approximate 65% of asset sale proceeds as defined in the Indenture.

In February and December of 2018, we commenced offers to repurchase up to $24.7 million and $25.4 million, respectively, of the Senior Notes. In March 2018 and January 2019 we repurchased $46,023 and $160,000, respectively, of the Senior Notes in accordance with this tender offer obligation.

The $26.0 million restricted cash on the balance sheet at December 31, 2018, represents proceeds from asset sales since the date of the February 2018 tender offer and is restricted as of that date by the terms of the Indenture. These proceeds were the subject of the December tender offer completed in January 2019 with the restriction on the non-tendered amount being released.

Concurrent with the July 31, 2017 Effective Date of the Plan, the Troms Offshore credit agreement was amended and restated to (i) reduce by 50% the required principal payments due from the Effective Date through March 31, 2019, (ii) modestly increase the interest rates on amounts outstanding through April 2023, and (iii) provide for security and additional guarantees, including (a) mortgages on six vessels and related assignments of earnings and insurances, (b) share pledges by Troms Offshore and certain subsidiaries of Troms Offshore, and (c) guarantees by certain subsidiaries of Troms Offshore.

The Troms Offshore borrowings continue to require semi-annual principal payments and bear interest at fixed rates based, in part, on Tidewater Inc.’s consolidated funded indebtedness to total capitalization ratio.

In May 2015, Troms Offshore entered into a $31.3 million, U.S. dollar denominated, 12 year borrowing agreement scheduled to mature in April 2027. The loan requires semi-annual principal and interest payments and bears interest at a fixed rate of 2.92% plus a premium based on Tidewater Inc.’s consolidated funded indebtedness to total capitalization ratio currently equal to 1.00% and a 1.00% sub-tranche premium (for a total all-in rate of 4.92%). As of December 31, 2018, $24.2 million is outstanding under this agreement.

In March 2015, Troms Offshore entered into a $29.5 million, U.S. dollar denominated, 12 year borrowing agreement scheduled to mature in January 2027. The loan requires semi-annual principal and interest payments and bears interest at a fixed rate of 2.91% plus a premium based on Tidewater Inc.’s consolidated funded indebtedness to total capitalization ratio currently equal to 1.00% and a 1.00% sub-tranche premium (for a total all-in rate of 4.91%). As of December 31, 2018, $22.1 million is outstanding under this agreement.

A summary of U.S. dollar denominated Troms Offshore borrowings outstanding is as follows:

	Successor
	December 31,		December 31,
(In thousands)	2018		2017
Notes due April 2027
Amount outstanding	$	24,157		25,463
Fair value of debt outstanding (Level 2)		24,157		25,427
Notes due January 2027
Amount outstanding	$	22,116		23,345
Fair value of debt outstanding (Level 2)		22,115		23,251

In January 2014, Troms Offshore entered into a 300 million Norwegian kroner (NOK) denominated, 12 year borrowing agreement scheduled to mature in January 2026. The loan requires semi-annual principal and interest payments and bears interest at a fixed rate of 2.31% plus a premium based on Tidewater Inc.’s consolidated funded indebtedness to total capitalization ratio currently equal to 1.25% and a 1.00% sub-tranche premium (for a total all-in rate of 4.56%). As of December 31, 2018, 200.0 million NOK (approximately $23.0 million) is outstanding under this agreement.

In May 2012, Troms Offshore entered into a 204.4 million NOK denominated borrowing agreement scheduled to mature in May 2024. The loan requires semi-annual principal and interest payments and bears interest at a fixed rate of 3.88% plus a premium based on Tidewater Inc.’s consolidated funded indebtedness to total capitalization ratio currently equal to 1.25% and a 1.00% sub-tranche premium (for a total all-in rate of 6.13%). As of December 31, 2018, 106.5 million NOK (approximately $12.2 million) is outstanding under this agreement.

A summary of NOK denominated Troms Offshore borrowings outstanding and their U.S. dollar equivalents is as follows:

	Successor
	December 31,		December 31,
(In thousands)	2018		2017
Notes due January 2026
NOK denominated		200,000		212,500
U.S. dollar equivalent	$	22,988		25,965
Fair value in U.S. dollar equivalent (Level 2)		22,988		25,850
Notes due May 2024
NOK denominated		106,500		115,020
U.S. dollar equivalent	$	12,241		14,054
Fair value in U.S. dollar equivalent (Level 2)		12,239		14,013

Upon consummation of the business combination, we utilized $37.7 million of cash from GulfMark and $72.0 million of cash on hand to repay the $100.0 million outstanding balance of GulfMark’s Term Loan Facility plus accrued interest and an early extinguishment penalty. The repayment of this term loan facility resulted in the recognition of a loss on early extinguishment of debt of $8.1 million for the year ended December 31, 2018. In addition, a related undrawn revolving credit facility with $25.0 million of borrowing capacity was also terminated immediately upon closure of the GulfMark merger.

We capitalize a portion of our interest costs incurred on borrowed funds used to construct vessels. Interest and debt costs incurred, net of interest capitalized are as follows:

	Successor				Predecessor
			Period from		Period from
	Twelve Months		August 1, 2017		April 1, 2017		Twelve Months
	Ended		through		through		Ended
(In thousands)	December 31, 2018		December 31, 2017		July 31, 2017		March 31, 2017
Interest and debt costs incurred, net of interest capitalized	$	30,439		13,009		11,179		75,026
Interest costs capitalized		521		101		601		4,829
Total interest and debt costs	$	30,960		13,110		11,780		79,855