Someday, the sun will rise once more to warm the ice-bound fleet of the world's dry bulk shippers. But that day has not arrived.

Diana Shipping (NYSE: DSX) must be thankful this week to be able to report a profit under these tough circumstances. The company exceeded analysts' expectations with both its third-quarter earnings of $26.4 million (a 22% decline) and resilient revenue of $64.6 million. But the shipper is well-aware that -- barring a miraculous improvement in the current outlook for the industry -- the waters are bound to grow more frigid.

Diana clings to countercyclical profitability on the strength of some remaining long-term charter contracts inked during the pre-collapse glory days of the dry bulk industry. The shipper's Capesize vessel Norfolk, for example, continues to generate $74,750 per day in charter revenue, and that lucrative contract extends to January 2013. But as time ticks on and the global fleet continues to grow far faster than baseline demand, those contracts are rolling over into replacement charters that pale in comparison.

On a consolidated basis, Diana's 11.5% year-over-year decline in its average daily charter rate appears relatively mild. With an attractive portfolio of even longer-term charters in place, Navios Maritime Holdings (NYSE: NM) shed only 7% from its prior-year average charter rate. But to grasp the broader market reality and its impact on one of the industry's top-notch operators, you have to dig into the individual contracts. Diana's Capesize vessel Boston, for example, recently ended a charter contract with a subsidiary of BHP Billiton (NYSE: BHP) that was priced at $52,000 per day, and entered a new charter that will bring in 73% lower daily revenue at just $14,000 per day! Back in August, Diana's Panamax carrier Protefs replaced a prior contract generating $59,000 per day with one priced at just $11,750 (an 80% haircut).

As the dry bulk industry's crisis extends, the insulation that carriers like Diana enjoyed from long-term charters during the industry's boom cycle is stripped away. DryShips (Nasdaq: DRYS) has 54% of its dry-bulk capacity locked in at an average rate of about $35,000 per day for 2012, but the glaring disconnect between that by-gone bonanza and the current going rate gives investors ample cause for concern. Fortunately, less-insulated operator Genco Shipping & Trading (NYSE: GNK) has already shown that it's possible to operate profitably even amid this unthinkably weak charter-rate environment.

I wish I could say brighter days were imminent on the horizon for dry bulk shippers. As an embattled investor in the sector myself, I continue to wait patiently for a clearing of the excess inventory and the improved rate environment that will eventually follow. For now, however, I hold little hope that such balance will be achieved during 2012, and I encourage Fools to approach the space with considerable, even extreme, caution. My 2010 CAPScall of Diana Shipping has underperformed the S&P 500 (INDEX: ^GSPC) by an eye-popping 55%! I will continue to keep a close eye on the industry for early signs of improvement, however; and I encourage Fools to track my coverage of this and other commodity-related sectors by bookmarking my article list here. I look forward to reading your thoughts on the dry bulk space in the comments section below.