10. Financial Instruments and Fair Value Disclosures

Our principal financial assets consist of cash and cash equivalents, amounts due from related parties and trade accounts receivable. Our principal financial liabilities consist of long-term bank loan, interest rate swaps, accounts payable, amounts due to related parties and accrued liabilities.

(a)Concentration of credit risk: Financial instruments, which may subject us to significant concentrations of credit risk, consist principally of amounts due from our charterers, including the receivable from Helios Pool, and cash and cash equivalents. We limit our credit risk with amounts due from our charterers by performing ongoing credit evaluations of our charterers’ financial condition and generally do not require collateral from our charterers. We limit our credit risk with our cash and cash equivalents by placing it with highly-rated financial institutions.

(b)Interest rate risk: Our long-term bank loans are based on LIBOR and hence we are exposed to movements thereto. We entered into interest rate swap agreements in order to hedge our variable interest rate exposure related to the RBS Loan Facility and our 2015 Debt Facility. The interest rate swaps related to the RBS Loan Facility effectively convert substantially all of our RBS Loan Facility from a floating to a fixed rate. To hedge our exposure to changes in interest rates we are a party to five floating‑to‑fixed interest rate swaps with RBS. In September 2015, we entered into interest rate swaps with Citibank N.A. (“Citibank”) and ING Bank N.V. (“ING”) to effectively convert a notional amount of $200 million and $50 million, respectively, of debt related to our 2015 Debt Facility from a floating rate to a fixed rate and each has a termination date of March 23, 2022. The fixed interest rate is 1.93% and 2.00% on the Citibank and ING swaps, respectively. Interest rate swaps are stated at fair value, which is determined using a discounted cash flow approach based on market‑based LIBOR swap yield rates. LIBOR swap rates are observable at commonly quoted intervals for the full terms of the swaps and therefore are considered Level 2 items in accordance with the fair value hierarchy. The fair value of the interest rate swap agreements approximates the amount that we would have to pay for the early termination of the agreements.

(c)Fair value Measurements: The following table summarizes the bases used to measure the financial assets and liabilities that are carried at fair value on a recurring basis on our balance sheet, which comprise our financial derivatives all of which are considered Level 2 items in accordance with the fair value hierarchy:

		September 30, 2015		March 31, 2015
Derivatives not designated as hedging instruments	Balance sheet location	Asset derivatives	Liability derivatives	Asset derivatives	Liability derivatives
Interest rate swap agreements	Long-term liabilities—Derivative instruments	—	16,455,007	—	12,730,462

The effect of derivative instruments within the unaudited condensed consolidated statement of operations for the periods presented is as follows:

		Three months ended
Derivatives not designated as hedging instruments	Location of gain/(loss) recognized	September 30, 2015			September 30, 2014
Interest Rate Swap—Change in fair value	Gain/(loss) on derivatives, net	$	(5,111,430	)	$	1,690,606
Interest Rate Swap—Realized loss	Gain/(loss) on derivatives, net	(1,230,333		)	(1,348,297		)

Gain/(loss) on derivatives—net		$	(6,341,763	)	$	342,309

		Six months ended
Derivatives not designated as hedging instruments	Location of gain/(loss) recognized	September 30, 2015			September 30, 2014
Interest Rate Swap—Change in fair value	Gain/(loss) on derivatives, net	$	(3,724,544	)	$	1,657,052
Interest Rate Swap—Realized loss	Gain/(loss) on derivatives, net	(2,474,824		)	(2,702,887		)

Gain/(loss) on derivatives—net		$	(6,199,368	)	$	(1,045,835	)

As of September 30, 2015 and March 31, 2015, no fair value measurements for assets or liabilities under Level 1 or Level 3 were recognized in the accompanying consolidated balance sheets. We did not have any other assets or liabilities measured at fair value on a non-recurring basis during the three and six months ended September 30, 2015.

(d) Book values and fair values of financial instruments: In addition to the derivatives that we are required to record at fair value on our balance sheet (see (c) above), we have other financial instruments that are carried at historical cost. These financial instruments include trade accounts receivable, amounts due from related parties, cash and cash equivalents, accounts payable, amounts due to related parties and accrued liabilities for which the historical carrying value approximates the fair value due to the short-term nature of these financial instruments. We also have long term bank debt for which we believe the historical carrying value approximates their fair value as the loans bear interest at variable interest rates, being LIBOR, which is observable at commonly quoted intervals for the full terms of the loans, and hence are considered as Level 2 items in accordance with the fair value hierarchy. Cash and cash equivalents and restricted cash are considered Level 1 items.