Identification & Site Information

Vessel Name: VESSLTERMS UNKNOWN

Type: Submerged Wreck

Location: Lake Superior

•1941 Coordinates: LAT 46-35-56.4N, LONG 90-52-37.0W

•1984–1985 Coordinates: LAT 46-35-55.94N, LONG 90-52-36.82W

•Decimal Degrees (Derived): LATDEC 46.598811, LONDEC -90.877081

Depth:

•1941 Survey: Depth unspecified

•1984 Survey: Depth coverage of 5.1 feet

•1985 Survey: Depth confirmed at 3 feet (0.91 meters) at Lowest Water Depth (LWD)

GP Quality: High precision in location accuracy

Description

The VESSLTERMS UNKNOWN wreck is a submerged object in Lake Superior, presenting a significant navigation hazard due to its shallow depth of 3 feet at LWD. Its precise location has been confirmed through multiple hydrographic surveys, and it is charted on NOAA Chart 14974 (NAD 1902) to alert mariners of its hazardous nature.

Historical Survey Summary

1.1941 Survey:

•Initial identification as a navigational hazard.

•Charted at LAT 46-35-56.4N, LONG 90-52-37.0W using a scale of 1:15,000 on Chart 14974.

•Depth details were not specified.

2.1984–1985 Surveys:

•Precise location determined using advanced hydrographic tools.

•Depth measured at 5.1 feet in 1984 and updated to 3 feet in 1985, indicating potential sedimentation or changes in water levels.

•Recommended retaining the wreck on navigational charts due to its confirmed hazard potential.

Significance and Risk Assessment

The VESSLTERMS UNKNOWN wreck poses significant risks to surface navigation, particularly in shallow water zones. Its risks include:

•Shallow Depth: With a depth of only 3 feet, the wreck is barely submerged, especially during periods of low water levels.

•Visibility: The wreck may be difficult to detect visually in certain conditions, such as poor weather or rough waters.

•Proximity to Traffic: The location in Lake Superior could intersect with shipping or recreational routes, increasing the likelihood of accidents.

Recommendations

1.Chart Retention:

•The wreck must remain charted as a navigation hazard on Chart 14974 to ensure mariner safety.

2.Mariner Advisories:

•Issue or update Notices to Mariners (NOTMARs) regarding the wreck’s location and associated risks, especially for shallow-Draft vessels.

3.Further Exploration:

•Conduct modern hydrographic surveys to assess changes in the wreck’s structure or position over time.

•Investigate the wreck’s origin, as its identity remains unknown.

Potential for Further Study

1.Archaeological Examination:

•The unknown origin of the wreck offers a unique opportunity for underwater exploration and historical analysis.

2.Technological Surveys:

•Advanced sonar imaging or ROV (Remotely Operated Vehicle) surveys could provide a clearer picture of the wreck’s structure and condition.

Resources & Links

•NOAA Nautical Charts: Chart 14974

•Maritime History Resources: Search local archives or Great Lakes shipwreck databases for clues about the wreck’s origin.

•US Coast Guard & Canadian Hydrographic Service: Collaboration for cross-border safety initiatives in shared waters.

Conclusion

The VESSLTERMS UNKNOWN wreck is a persistent navigation hazard in Lake Superior, underscoring the importance of precise charting and ongoing monitoring to ensure mariner safety. While its identity remains a mystery, further exploration and documentation could provide insights into its historical significance and help mitigate risks to navigation in the region.