Gulfmark Offshore (NYSE: GLF) is expected to report Q3 earnings around Oct. 23. Here's what Wall Street wants to see:

The 10-second takeaway
Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict Gulfmark Offshore's revenues will expand 4.3% and EPS will expand 31.5%.

The average estimate for revenue is $108.3 million. On the bottom line, the average EPS estimate is $0.71.

Revenue details
Last quarter, Gulfmark Offshore booked revenue of $104.9 million. GAAP reported sales were 8.2% higher than the prior-year quarter's $96.9 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
Last quarter, non-GAAP EPS came in at $0.47. GAAP EPS of $0.53 for Q2 were 3.9% higher than the prior-year quarter's $0.51 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Recent performance
For the preceding quarter, gross margin was 46.1%, 170 basis points worse than the prior-year quarter. Operating margin was 20.5%, 60 basis points worse than the prior-year quarter. Net margin was 13.4%, 30 basis points worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $407.8 million. The average EPS estimate is $1.78.

Investor sentiment
The stock has a five-star rating (out of five) at Motley Fool CAPS, with 449 members out of 456 rating the stock outperform, and seven members rating it underperform. Among 100 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 99 give Gulfmark Offshore a green thumbs-up, and one give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Gulfmark Offshore is outperform, with an average price target of $55.00.

Are you missing a big story in the energy space? Read about "One Stock to Own Before Nat Gas Act 2011 Becomes Law." Click here for instant access to this free report.