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Oil tanker shipwrecks represent both cultural heritage and environmental risk. These wrecks are historically significant as war graves and simultaneously pose long-term threats to marine ecosystems through the potential release of petroleum cargo. During World War II, German U-boats targeted tankers along the U.S. East Coast, especially during Operation Drumbeat in 1942. Hundreds of tankers were sunk globally, and many of these wrecks remain intact and retain much of their fuel cargo, classifying them as potentially polluting wrecks (PPWs) which could release millions of gallons of oil if hull structures collapse. Tankers developed from modified sailing ships to standardized steel designs, highlighting petroleum’s strategic importance in modern warfare. The wrecks of these vessels exemplify the intersection of maritime archeology and environmental conservation, demanding urgent interdisciplinary study to safeguard ecosystems while preserving ocean heritage.

Background Frailty, a multidimensional syndrome entailing loss of energy, physical ability, cognition, and health, plays a significant role in elderly morbidity and mortality. No study has examined frailty in relation to mortality after femoral neck fractures in elderly patients. Questions/purposes We examined the association of a modified frailty index abbreviated from the Canadian Study of Health and Aging Frailty Index to 1- and 2-year mortality rates after a femoral neck fracture. Specifically we examined: (1) Is there an association of a modified frailty index with 1- and 2-year mortality rates in patients aged 60 years and older who sustain a low-energy femoral neck fracture? (2) Do the receiver operating characteristic (ROC) curves indicate that the modified frailty index can be a potential tool predictive of mortality and does a specific modified frailty index value demonstrate increased odds ratio for mortality? (3) Do any of the individual clinical deficits comprising the modified frailty index independently associate with mortality? Methods We retrospectively reviewed 697 low-energy femoral neck fractures in patients aged 60 years and older at our Level I trauma center from 2005 to 2009. A total of 218 (31%) patients with high-energy or pathologic fracture, postoperative complication including infection or revision surgery, fracture of the contralateral hip, or missing documented mobility status were excluded. The remaining 481 patients, with a mean age of 81.2 years, were included. Mortality data were obtained from a state vital statistics department using date of birth and Social Security numbers. Statistical analysis included unequal variance t-test, Pearson correlation of age and frailty, ROC curves and area under the curve, Hosmer-Lemeshow statistics, and logistic regression models. Results One-year mortality analysis found the mean modified frailty index was higher in patients who died (4.6 ± 1.8) than in those who lived (3.0 ± 2; p < 0.001), which was maintained in a 2-year mortality analysis (4.4 ± 1.8 versus 3.0 ± 2; p < 0.001). In ROC analysis, the area under the curve was 0.74 and 0.72 for 1- and 2-year mortality, respectively. Patients with a modified frailty index of 4 or greater had an odds ratio of 4.97 for 1-year mortality and an odds ratio of 4.01 for 2-year mortality as compared with patients with less than 4. Logistic regression models demonstrated that the clinical deficits of mobility, respiratory, renal, malignancy, thyroid, and impaired cognition were independently associated with 1- and 2-year mortality. Conclusions Patients aged 60 years and older sustaining a femoral neck fracture, with a higher modified frailty index, had increased 1- and 2-year mortality rates, and the ROC analysis suggests that this tool may be predictive of mortality. Patients with a modified frailty index of 4 or greater have increased risk for mortality at 1 and 2 years. Clinical deficits of mobility, respiratory, renal, malignancy, thyroid, and impaired cognition also may be independently associated with mortality. The modified frailty index may be a useful tool in predicting mortality, guiding patient and family expectations and elucidating implant/surgery choices. Further prospective studies are necessary to strengthen the predictive power of the index. Level of Evidence Level IV, prognostic study. See Instructions for Authors for a complete description of levels of evidence.

Background Femoral neck fractures (FNFs) comprise 50% of geriatric hip fractures. Appropriate management requires surgeons to balance potential risks and associated healthcare costs with surgical treatment. Treatment complications can lead to reoperation resulting in increased patient risks and costs. Understanding etiologies of treatment failure and the population at risk may decrease reoperation rates. Questions/purposes We therefore (1) determined if treatment modality and/or displacement affected reoperation rates after FNF; and (2) identified factors associated with increased reoperation and timing and reasons for reoperation. Methods We reviewed 1411 records of patients older than 60 years treated for FNF with internal fixation or hemiarthroplasty between 1998 and 2009. We extracted patient age, sex, fracture classification, treatment modality and date, occurrence of and reasons for reoperation, comorbid conditions at the time of each surgery, and dates of death or last contact. Minimum followup was 12 months (median, 45 months; range, 12–157 months). Results Internal fixation (hazard ratio [HR], 6.38) and displacement (HR, 2.92) were independently associated with increased reoperation rates. The reoperation rate for nondisplaced fractures treated with fixation was 15% and for displaced fractures 38% after fixation and 7% after hemiarthroplasty. Most fractures treated with fixation underwent reoperation within 1 year primarily for nonunion. Most fractures treated with hemiarthroplasty underwent reoperation within 3 months, primarily for infection. Conclusions Overall, hemiarthroplasty resulted in fewer reoperations versus internal fixation and displaced fractures underwent reoperation more than nondisplaced. Our data suggest there are fewer reoperations when treating elderly patients with displaced FNFs with hemiarthroplasty than with internal fixation. Level of Evidence Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

This article seeks to complement efforts to summarize information on the exceptional natural significance of the Emperor Seamounts. The human history of the Emperor Seamounts is culturally diverse and spans thousands of years. This ranges from indigenous cultures to the period of European colonial exploration and expansion to the rise of the modern global economy and its impact on the area through the hunting of marine mammals, fishing, and the transportation of commodities across these remote waters on ships. Some of these vessels were wrecked or disappeared, and may rest on the seabed of the Emperor Seamounts. Understanding this human history is critical in approaching the assessment, ongoing study, public outreach and management of this remote region, which has been highlighted as one of the most important areas beyond national jurisdiction to protect globally.

A wooden shipwreck of the first half of the nineteenth century in the Gulf of Mexico was documented and studied in 2022. The site is largely devoid of artifacts, which may suggest the vessel was partially salvaged prior to sinking. Its most dominant feature is an iron ship’s stove or camboose that is uniquely configured when compared to other known archaeological examples. The camboose may be evidence of a whaling context for the wreck, which for now leads to a working but not proven hypothesis that this may be the wreck of the whaling brig Industry , lost close to this location in 1836 after nearly capsizing in a storm and subsequently being stripped of much of its gear for abandonment in a sinking condition.

A shipwreck discovered in 2005 and subsequently studied in 2013 and 2017 is the remains of a copper-sheathed, early to mid-nineteenth-century sailing vessel. It appears to be of the type known as a “packet ship” that sank in the Gulf of Mexico in the area of Viosca Knoll sometime between 1830 and 1860. The site is a substantially intact, undisturbed wreck from a key period in the nineteenth-century development of the Gulf of Mexico. During this period, the Gulf became an important part of the American and global maritime economy, particularly in regard to the cotton and sugar trades from New Orleans and Mobile. The general commodities trade to those ports, and early to mid-nineteenth-century immigration by sea to the American Gulf especially linked the world to New Orleans.

A survey for the wreck of the former U.S. Navy destroyer Stewart (DD-224) was conducted during a test of autonomous underwater vehicle (AUV) systems in the waters of Cordell Bank National Marine Sanctuary, off the central California coast of the United States, in August 2024. The wreck of the destroyer was discovered less than 4 miles from its reported sinking position. The intact wreck is an artifact of the period between both world wars, of World War II, and of a career as a warship for both the United States and Japan. The August 2024 archaeological assessment of the wreck confirmed its identity and documented aspects of its modifications following capture by Japanese forces and stripping before its ceremonial “burial” at sea after its repatriation at war’s end, as well as the forensics of its disposal.