Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, March 12th:Royal Caribbean Cruises Ltd. (RCL) : This cruise-line company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 10% over the last 60 days.Royal Caribbean has a PEG ratio of 0.46 compared with 1.34 for the industry. The company possesses a Growth Score  of A.The AZEK Company Inc. (AZEK) : This manufacturer and seller of building prod ...