• It is an artificial reef, which creates a habitat for many types of marine life

• It often is a large structure with many interesting parts and machinery, which is not normally closely observable on working, floating vessels

• It often has an exciting or tragic history

• It presents new skill challenges for scuba divers

• It is part of the underwater cultural heritage and may be an important archaeological resource

• It provides a first-hand insight into context for the loss, such as causal connections,
geographical associations, trade patterns and many other areas, providing a microcosm of our maritime heritage and maritime history.