Mad Money Mailbag: Throwing Cold Water on Quintana Maritime

Editor's note: The following are questions received from viewers of "Mad Money," seen every day at 6 p.m. EDT on CNBC.

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What is your opinion of Quintana Maritime (QMAR Quote) and its large dividend?

-- Mel from Colorado

James J. Cramer: I'm not a bull on this stock or the energy shipping space in general these days. The company is quite small relative to its peers in a business where operational scale is key. In my opinion General Maritime (GMR Quote) is the best of breed in the shipping space.

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Coca-Cola Hellenic Bottling (CCH Quote) shares have dropped more than 20% in the past two months. Is now the time to buy?

-- John from Washington

James J. Cramer: First of all, if you want to invest in the Coke brand, I'd focus on Coca-Cola (KO Quote) shares. The stock you mentioned only trades about 5,000 shares a day and is centered primarily around a small group of Greek bottling assets.

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Want more Cramer? Check out Jim's rules and commandments for investing from his latest book by clicking here.