Note 4 - Vessel Acquisitions, Dispositions and New-build Program (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Vessel Additions [Table Text Block]

Vessel Additions Since December 31, 2015
			Year	Length						Month
Vessel	Region	Type (1)	Built	(feet)		BHP (2)		DWT (3)		Delivered
Hercules	Americas	LgPSV	2016		286		10,960		5,300	Jun-16
North Barents	N. Sea	LgPSV	2017		304		11,935		4,700	Jan-17

Vessel Additions Since December 31, 2014
Vessel	Region	Type (1)	Year Built	Length (feet)		BHP (2)		DWT (3)		Month Delivered
Regulus	Americas	LgPSV	2015		272		9,849		3,580	Jan-15

Vessels Disposed [Table Text Block]

Vessels Disposed of Since December 31, 2015
			Year	Length						Month
Vessel	Region	Type (1)	Built	(feet)		BHP (2)		DWT (3)		Disposed
Highland Spirit	N. Sea	SpV	1998		202		6,000		1,620	May-16
Sea Intrepid	SEA	SmAHTS	2005		193		5,150		1,500	Jul-16
Sea Guardian	SEA	SmAHTS	2006		193		5,150		1,500	Jul-16
Highland Drummer	SEA	LgPSV	1997		220		5,450		3,122	Nov-16
Mako	Americas	FSV	2008		181		7,200		552	Mar-17
Tiger	Americas	FSV	2009		181		7,200		552	Mar-17

Vessels Disposed of Since December 31, 2014
Vessel	Region	Type (1)	Year Built	Length (feet)		BHP (2)		DWT (3)		Month Disposed
North Truck	N. Sea	LgPSV	1983		265		6,120		3,370	Jan-15
Highland Trader	N. Sea	LgPSV	1996		220		5,450		3,115	Jul-15
Highland Star	N. Sea	LgPSV	1991		268		6,600		3,075	Nov-15