NBM Dive Site Resource
Cassimir (Cassimer)
Offshore Onslow Bay, North Carolina, United States
Offshore transport wreck lost in a collision in 1942; offered on extended-day wreck-diving trips.
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Original NBM Artwork
Aquatic life at this dive site
What divers may encounter
Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.
Atlantic Spadefish
Chaetodipterus faberThe current charter profile reports large schools of spadefish around the Cassimir. Divers may encounter them circling above the wreck.
Brian GratwickeOpen Aquatic Life Profile →
Queen Angelfish
Holacanthus ciliarisOlympus reports queen angelfish regularly at the Cassimir. Look for solitary fish close to encrusted surfaces and sheltered wreck structure.
Frank Karafa, courtesy U.S. Army Medical Logistics Command/DVIDSOpen Aquatic Life Profile →
Sand Tiger Shark
Carcharias taurusThe operator identifies the Cassimir as a sand tiger shark site. Sharks may cruise above the wreck, but every sighting remains condition-dependent.
Naturally Buoyant MediaOpen Aquatic Life Profile →
Site media
Photographs
Three views rotate from the published gallery on each visit.
Contributor media
Dive videos
Three featured video positions are reserved on every profile.Published reference location
Location map
The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.Map data © OpenStreetMap contributors
Recent field observations
Diver-reported temperatures
Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.
Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.
Shipwreck-only module
The wreck
This section appears only on shipwreck records and brings the vessel, its loss, present condition, access, and responsible wreck-diving considerations into one place.
Plan the trip
Dive boats that visit this wreck
Discovery Diving lists this wreck and advertises this boat in its charter fleet. Confirm your wreck itinerary, boat assignment, conditions and diver qualifications with the operator.
Open boat profile →Morehead City, North CarolinaMV Olympus — Morehead City and the Crystal Coast, North Carolina Dive CharterOlympus Dive CenterOlympus Dive Center lists this wreck in its current Extended Day Dive Trip program and operates MV Olympus in the same charter fleet. The exact vessel and destination are assigned by the operator; confirm the scheduled boat and wreck before booking.
Open boat profile →Morehead City, North CarolinaMV Midnight Express — Morehead City and the Crystal Coast, North Carolina Dive CharterOlympus Dive CenterOlympus Dive Center lists this wreck in its current Extended Day Dive Trip program and operates MV Midnight Express in the same charter fleet. The exact vessel and destination are assigned by the operator; confirm the scheduled boat and wreck before booking.
Open boat profile →Beaufort, North CarolinaOutrageous VDiscovery DivingDiscovery Diving lists this wreck and advertises this boat in its charter fleet. Confirm your wreck itinerary, boat assignment, conditions and diver qualifications with the operator.
Open boat profile →Before you arrive
Access notes
Offshore boat access. Confirm current conditions and experience requirements with the charter operator. Map points are for site discovery, not navigation.
Independent resource notice
This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.