13. Debt Obligations

Debt obligations consist of the following (in millions):



	June 30, 2019			December 31, 2018
Construction
LIBOR plus 5.85% Note, due 2023	$	78.0		$	80.0
LIBOR plus 1.50% Line of Credit	53.4			34.0
Other	0.3			—
Marine Services
Obligations under capital leases	36.8			40.4
7.49% Note, due 2020	21.6			14.0
Notes payable and revolving lines of credit, various maturity dates	11.5			12.9
Energy
LIBOR plus 3.00% Term Loan due in 2023	28.0			—
5.00% Term Loan due in 2022	11.8			12.4
4.50% Note due in 2022	10.8			11.3
Other, various maturity dates	3.2			3.2
Life Sciences
Notes payable due in 2019	—			1.7
Broadcasting
8.50% Notes due 2019	54.0			35.0
Other, various maturity dates	12.0			11.1
Non-Operating Corporate
11.5% Senior Secured Notes, due 2021	470.0			470.0
7.5% Convertible Senior Notes, due 2022	55.0			55.0
LIBOR plus 6.75% Line of Credit	15.0			—
Total	861.4			781.0
Issuance discount, net and deferred financing costs	(33.2		)	(37.1		)
Debt obligations	$	828.2		$	743.9

Marine Sciences

In June 2019, GMSL refinanced the Shawbrook loan, increasing the principal balance to £17.0 million, or approximately $21.6 million, and extending the maturity to June 2020.

Energy

In June 2019, ANG entered into a term loan with M&T bank for $28.0 million. The loan bears variable interest annually at LIBOR plus 3.0% and matures in 2023. The term loan was used to finance the acquisition of ampCNG.

Life Sciences

In June 2019, R2 converted a portion of the $1.7 million secured convertible notes into shares of R2 preferred equity. The remaining portion was repaid.

Broadcasting

In January, April, and May 2019, HC2 Broadcasting issued an additional $7.5 million, $0.7 million, and $10.8 million, respectively of 8.5% notes (the "8.5% Notes"). In July 2019, the maturity dates of the 8.5% Notes were extended to August 31, 2019.

Non-Operating Corporate

In April 2019, HC2 entered into a $15.0 million secured revolving credit agreement (the “Revolving Credit Agreement”) with MSD PCOF Partners IX, LLC. The Revolving Credit Agreement matures on June 1, 2021. Loans under the Revolving Credit Agreement bear interest at a per annum rate equal to, at HC2's option, one, two or three month LIBOR plus a margin of 6.75%. In April 2019 and May 2019, HC2 drew $5.0 million and $10.0 million of the Revolving Credit Agreement, respectively. The Company used the proceeds for working capital and general corporate purposes.