BOKA Da Vinci

Design

MT6022XL

Dimensions

115.4 m length × 22.2 m beam

Deadweight

5,662 t at zero trim

Maximum draft

7.035 m

Positioning

DP2; GE Converteam ADP-21

Saturation system

Drass Galeazzi; 18 divers; 300 msw

Diving bells

Two three-person bells, 6 m³ each

Hyperbaric evacuation

Two 18-person lifeboats

Surface diving

Two DDCs; two two-person LARS

Diving gas

18,000 m³ storage; gas reclaim

Main deck

1,120 m²; 10 t/m²; 3,300 t payload

Main crane

TTS 140 t AHC, two-fall, 5.5–7 m radius; 600 m hook depth

Single-fall crane mode

70 t at 5.5–10 m radius; 1200 m hook depth

Auxiliary crane

40 t at 5.5–13.5 m radius; 150 m hook depth

ROV

Seaeye Cougar, light work class

Accommodation

120 persons

Moonpools

Work: 5 × 5 m; bells: two 3.9 × 3.9 m

Helideck

Sikorsky S92; 12 t maximum take-off weight

Energy storage retrofit

Up to 450 kWh; used during offshore operations from 2024.

Undated case page explicitly identifies 2024 as the start of offshore battery use.

OEM confirms saturation-system supply

DRASS names Boka Da Vinci among vessels outfitted by Korean shipyards with its deep-diving saturation systems.

Retrospective supply reference published in 2024; the system installation date and current maintenance condition are not specified.

Vessel identifier review

BOKA Da Vinci · IMO 9441233 · MMSI 538003647

Identity reviewed in public vessel listings. Public position snapshots are historical evidence, not a live feed.

Builder / construction

Hanjin Heavy Industries, Pusan, South Korea; built 2011.

Published flag

Marshall Islands

Fleet association

Boskalis DSV fleet; vessels may be owned or chartered.

Undated fleet page; this listing alone does not establish the registered owner.

Group acquisition

Boskalis reported buying the vessel after chartering it since 2017.

The appended annual report conflicts on timing: page 43 says December 2021, page 51 says early 2022. Acquisition is supported; a precise transaction date is not.

Published class notation

DNV: 1A1, DSV-SAT, DSV-SURFACE, DYNPOS-AUTR, HELDK-SH

Operator specification; not a current class-status or inspection certificate.

Published ISM / ISPS certification

DNV/GL, on behalf of Marshall Islands.

Statement in the April 2020 sheet; current validity has not been checked.

Vessel Inspection

USCG zone/port: Houma, Louisiana. Case status: Closed / Agency Action Complete.

USCG activity 6248201; vessel matched by IMO 9441233. USCG zone/port is an administrative field, not a verified incident location. The API gives an activity start date; this is not a current certificate or a complete worldwide inspection history. Inspection-scope details were unavailable at review. Deficiency details were unavailable at review.

Hewett decommissioning

Da Vinci and Topaz completed 200 operational days together; diving at 24–44 m, umbilical flushing and infrastructure sealing.

The total applies to the pair, not each vessel. The report also describes riser work on Bravo and Charlie platforms; vessel-specific allocation is not given.

PLC maintenance

DRASS lists 2018 PLC maintenance jointly for Da Vinci and Atlantis.

Shared entry; vessel-specific dates unavailable.

North Sea IRM campaign

UK Central and Southern North Sea: control-module and jumper replacement, diagnostics, valve work and visual inspection.

Undated brochure case; vessel is explicitly named, but client and campaign dates are not given.

Southern North Sea decommissioning

Joint Topaz / Da Vinci campaign: saturation and air diving, disconnections, wellhead and subsea-structure removal.

Undated project highlight; individual vessel dates and allocations are unspecified.