5. Vessels, Net


			Accumulated
	Cost		depreciation		Net book Value
Balance, April 1, 2019	$	1,732,993,810	$	(254,473,496)	$	1,478,520,314
Other additions		1,414,195		—		1,414,195
Depreciation		—		(16,106,726)		(16,106,726)
Balance, June 30, 2019	$	1,734,408,005	$	(270,580,222)	$	1,463,827,783

Additions to vessels, net mainly consisted of the first installment on the purchase of scrubbers for ten of our VLGCs during the three months ended June 30, 2019. Our vessels, with a total carrying value of $1,463.8 million and $1,478.5 million as of June 30, 2019 and March 31, 2019, respectively, are first‑priority mortgaged as collateral for our long-term debt (refer to Note 6 below). No impairment loss was recorded for the periods presented.