pre_text: B. Business Overview Our Fleet Our fleet currently consists of 23 Suezmax crude oil tankers, of which the vast majority have been built in Korea. The majority of our vessels are employed in the spot market, together with one vessel currently on a longer term time charter agreement expiring in 2021 or later. The vessels are considered homogenous and interchangeable as they have approximately the same freight capacity and ability to transport the same type of cargo.
table: Vessel Built in  Deadweight Tons   Delivered to NAT in
table: Nordic Freedom 2005 159,331 2005
table: Nordic Moon 2002 160,305 2006
table: Nordic Apollo 2003 159,998 2006
table: Nordic Cosmos 2003 159,999 2006
table: Nordic Grace 2002 149,921 2009
table: Nordic Mistral 2002 164,236 2009
table: Nordic Passat 2002 164,274 2010
table: Nordic Vega 2010 163,940 2010
table: Nordic Breeze 2011 158,597 2011
table: Nordic Zenith 2011 158,645 2011
table: Nordic Sprinter 2005 159,089 2014
table: Nordic Skier 2005 159,089 2014
table: Nordic Light 2010 158,475 2015
table: Nordic Cross 2010 158,475 2015
table: Nordic Luna 2004 150,037 2016
table: Nordic Castor 2004 150,249 2016
table: Nordic Sirius 2000 150,183 2016
table: Nordic Pollux 2003 150,103 2016
table: Nordic Star 2016 159,000 2016
table: Nordic Space 2017 159,000 2017
table: Nordic Aquarius 2018 157,000 2018
table: Nordic Cygnus 2018 157,000 2018
table: Nordic Tellus 2018 157,000 2018
question: Analyse this data from a financial earnings document. What is the average weight of Nordic Freedom and Nordic Moon?