Builder
ASL Shipyard Pte. Ltd., Singapore
VESSEL PROFILE · IMO 9481817
Published capabilities, ownership records and history. Evidence stays attached to every fact.
Source dates describe the evidence, not current certification or operational availability. Operating roles may be historical. Reference-only screenshot figures and ratings are not used in this summary.
Group fleet affiliation; the source does not distinguish the registered owning company from the operating subsidiary.
Build year in the published fleet listing.
Cummins case study describes the vessel built by ASL; dimensions are historical design particulars.
Cummins case study describes the vessel built by ASL; dimensions are historical design particulars.
Published technical configuration; current operational limits and certification require confirmation.
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
Published technical configuration; current operational limits and certification require confirmation.
Published technical configuration; current operational limits and certification require confirmation.
Published technical configuration; current operational limits and certification require confirmation.
Published technical configuration; current operational limits and certification require confirmation.
Not sourced in this summary: Bell occupancy, Saturation system manufacturer, Deck area, Draft.
Owner/operator fleet and engine-maker case study supplement existing diving facts. No current mission inferred.
Published design and equipment particulars are evidence of the source configuration, not a current certificate or availability guarantee.
ASL Shipyard Pte. Ltd., Singapore
90 m length × 22 m beam
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
5,955 GT
3,500 t
DP2
Published technical configuration; current operational limits and certification require confirmation.
12 divers; single bell; self-propelled hyperbaric lifeboat
Published technical configuration; current operational limits and certification require confirmation.
300 m
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
6.3 m³ bell through a midship moonpool
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
Two living chambers for 12 divers plus a decompression chamber
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
Three Kawasaki bow thrusters and two Niigata propulsion azimuths
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
Six Cummins QSK60-DM sets, each delivering 1,600 kW electrically
The OEM separately quotes 1,900 kW engine power per set. Electrical output and engine rating are different quantities; configuration is historical.
Cummins KTA38-DM
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
100 t AHC knuckle-boom
Published technical configuration; current operational limits and certification require confirmation.
10 t auxiliary; 2 t stores crane
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
100 people; single, double and four-berth cabins
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
Sikorsky S-61N / Super Puma
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
ROV support provision described by engine OEM
OEM account of the original vessel configuration; subsequent alterations are not established by this source.
The detailed OEM account describes the original configuration. A dated current equipment sheet and approved operational limits were not located in the reviewed sources.
Checked 17 Oct 2026
Registered owner, group owner, operator, manager and P&I entered owner are different roles. Each record retains the role and date stated by its source.
The public AIS-provider listing confirms the requested vessel identity. The position is a dated research snapshot, not live telemetry.
Mermaid Asiana — IMO 9481817; MMSI 373887000.
Public provider identity listing. Review date is not an AIS observation date, ownership confirmation or current certification.
Mermaid Subsea Services (Thailand) Ltd.
Role is the owner named under Gard’s P&I entry, not an independently verified registered or beneficial owner.
Panama
Nemo Subsea AS took title from Great Cormorant Maritime Ltd.
Historical transfer. Nemo was wholly owned by Mermaid Offshore Services Ltd.; this does not establish current registered title.
Mermaid Offshore Services Ltd.
Historical charter arrangement; separate from ownership of the ship.
DNV lists Mermaid Subsea Services (Thailand) Limited as ISM/DOC holder for IMO 9481817.
The public page does not identify an owner or manager in those separate fields. DOC-holder status must not be substituted for ownership.
The 2010 owner and charterer are known, and Gard identifies a P&I entered owner. These do not establish present registered or beneficial ownership.
Checked 17 Oct 2026
These are historical records within each source’s coverage. Missing records are not a clean bill of health, and class descriptions do not prove current certification.
BBC, WRC and MLC certificates: 20 February 2026–20 February 2027
Dates displayed by the insurer at review. This is insurance evidence, not a port-state inspection, class survey or guarantee of continuing cover.
The Safety Management Certificate is dated 3 June 2025, expiring 3 July 2030. The Maritime Labour Certificate has the same issue date and expires 6 April 2028.
Register viewed on the review date; not an independently verified certificate or guarantee of operational readiness.
DNV
Conflicts with the undated Mermaid fleet webpage’s ABS description; no class-transfer date was established.
ABS
The operator page may retain an older configuration. Gard lists DNV; current class certificates were not obtained.
The exact-IMO search result labels Mermaid Asiana “Not in DNV” while listing MLC, ISPS and ISM services. Its detail page lists statutory certificates, rather than a classification section.
A DNV service entry is not evidence of DNV class. This clarifies the earlier insurer/operator class-listing conflict without asserting another current society or a transfer date.
Operator ABS and insurer DNV class listings conflict. Neither supplies the class-change date, current survey status or a complete port-state-control inspection history.
Checked 17 Oct 2026
No exact IMO match was returned by the USCG PSIX vessel search. This is a limited US dataset, not a worldwide inspection clearance.
Checked 17 Oct 2026
Vessel-specific events and contextual project records retain their dates and limitations. A regional contract award alone does not establish vessel employment.
Supported a key Middle East client throughout Q2 2026
April–June 2026 reporting period; client and field not disclosed.
Planned maintenance ended in April 2022; returned to its main Middle East project
Client and field are not named in this presentation.
Nemo took delivery in Singapore on 29 January 2010
Recent Middle East operational reports omit the client and field. They do not establish a complete dated project history.
Checked 17 Oct 2026