International Salvage Union (surveyor / salvor overlap)
ISU · HQ United Kingdom · founded 1968 · ~60 members
Summary
ISU is the professional body of marine salvage companies. Members are companies not individuals; salvor careers cross-over with marine surveying but require specialist casualty-response expertise.
Certification pathway
ISU member-company introduction + salvage engineering credentials.
Specialisations
- Salvage engineering
- Casualty response
- Wreck removal
Typical client base
P&I clubs, hull underwriters, flag states