t has been rough sailing for tanker stocks in the past couple of years, but several tanker stocks may finally get back on course in 2018. The Analyst Morgan Stanley analyst Fotis Giannakoulis on Monday upgraded the following three tanker stocks: Euronav NV Ordinary Shares EURN from Equal-Weight to Overweight, price target $10.Teekay Offshore Partners L.P. TOO from Underweight to Equal-Weight, price target raised from $1.50 to $2.50.Navigator Holdings Ltd NVGS from Underweight to Equal-Weight, price target raised from $8.00 to $12.50.SourceThe price is ready to break out the falling channel and form some upside. $EURN, Euronav NV / D There is a breakout of the falling channel. We can expect more upside. $TOO, Teekay Offshore Partners L.P. / D Stochastics are getting closer to the overbought zone. the upside starts losing it's force. $NVGS, Navigator Holdings Ltd. / D