29.5m Steel Workboat Catamaran

Listing ID - 4895
Description	29.5m Steel Workboat Catamaran
Date Launched	1980 (major rebuild 2016 and 2025)
Length	29.5m (96ft 9in)
Beam	10.8m (35ft 5in)
Draft	2.2m (7ft 2in)
Note	2x Detroit Diesel wit Twin Disc Gearboxes. Model GM 16V-71N
Location	Hobart, Tasmania
Broker	Peter Cookson peter.cookson@seaboatsbrokers.com +61 429 543 180
Price	Price guidance can be given to interested parties.
Price Notes	Owners will also consider long term charter to suitable counterparties. Last drydock 2021. Cook Islands survey completed 2025. Shipowners Club Insurance survey completed in February 2026
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This twin hull multipurpose catamaran was built as an oil skimmer and pollution control vessel, for her Original Owners the Japanese Government. She was built by Mitsubishi Heavy Industries at Kobe, Japan in January 1980. The same Company that has the contract to build Australia’s new Frigates.

Owners confirm that as of December 2025 the vessel is in survey with Cook Islands and all certificates are issued. With manning Certificates for International and Australian EZ operations.

The vessel has just completed as of February 2026 a very detailed Shipowners Club Insurance survey, without any defects found. No infringements, advice or recommendations have been issued following this survey.

The vessel is ideally suited to servicing small islands with shallow draft and limited facilities. She can carry up to 125 tonnes of deck cargo, with a 10 ton per sq/metre rating. Also, she has chemically lined liquid cargo tanks 2 x 32.6 cubic metres and 2 x 10.8 cubic metres for a variety of products.

The vessel is particularly reliable and economical to operate. With a sweet spot at 9.5 knots using half engine power.

We understand that Owners have maintained her to an excellent standard and the engines have been regularly rebuilt and have low running hours.

Preliminary calculations and drawings have been made for fitting a gantry crane to the aft deck. The calculations demonstrate that the crane capacity can be 20 tons at 9.5 metres, travelling through an arc of 180 degrees.

Price guidance can be given to interested parties.

Owners will also consider long term charter to suitable counterparties.

Commercial survey category: International and Coastal

Type: Steel catamaran (workboat)

Builder: Mitsubishi, Kobe, Japan – Ship # 1113

Launched/Rebuilt: 1980 / 2025

Dimensions:

LOA: 29.5m

Beam: 10.8m

Draft: 2.2m

Deadweigh: 108.28 tons

Net Tonnage: 52.8 tons

Material Hulls: Steel

Keel: Steel

Decks: Steel

Superstructure: Steel

Hulls

She appears to have been built to the highest standards under Japanese government supervision, and I have assessed her to be integrally and structurally sound throughout.

Prior to leaving Japan extensive ultrasonic thickness testing was undertaken as part of annual survey.

Frames/Stringers: ~ 200mm x 70mm x 10mm Ts @ 500mm stitch welded to skin + fully plated transverse semi-bulkheads below the waterline

Bulkheads: 9 full bulkheads in each hull

Surface A/W: Good

Deck: Good.

The decks and superstructure with all fittings have been abrasive blasted and epoxy coated. The completion of these works is to a generally high standard. In addition, the provision of a ‘Moon Pool’ for diving operations, enhanced electrical generation capacity and provision for stowage of ISO containers. Two containers can be placed side by side between the ER casings.

Windows/ports: All windows and ports are good

Hatches: Good

Seacocks etc: Good

Skin Fittings: Good

Rudders: Good

Rudder stock /gland: Good

Steering: Double single acting hydraulic rams at each rudder.

Auxiliary steering: Manual hydraulic pumps + twin screw

Comments/recommendations:

• The vessel has been refitted and refurbished to a high standard and is well maintained.

• Considerable effort has been expended to improve functionality, Material value and appearance.

• Internally the paintwork is generally well maintained.

• The vessel is in International Survey with Cook Islands and suitable for Australian EZ Coastal operations.

MAIN ENGINES

2x Diesel Inboard - Shaft Drive

Make: 2x Detroit Diesel with Twin Disc Gearboxes Model: Gm 16v-71n

Serial #S: 16va-16690 & 16va-16614 Hp: 2 X ~ 600hp (480hp @1980rpm)

Recorded Hours: 3604 Age: Original

Auxiliary Engines

Make: Isuzu Model: 6bd11-Mu Age: 1991 (Generator) Make: Isuzu Model: 6bditc-Um Age: 1992 (Hydraulics)

Comments:

• For further details of engines and auxiliaries see attached inventory.

• All machinery is in good order and well maintained.

• Machinery hours are low for a vessel this age.

• The vessel carries 2 spare propellers.

• The vessel has a complete inventory of safety equipment to SOLAS standards.

• The shaft seals are backed up with inflatable collars to allow for replacement of the lip seals in case of damage.

• The accommodation is adequate for 8 with a comfortable mess, fully equipped galley, separate toilet and bathing facilities.

• The vessel has been comprehensively upgraded over the past 5 years and is in very good condition.

• Extensive equipment upgrades and improved functionality make HARIMA an extremely versatile and adaptable platform for a range of Marine Project support.

The details of all vessels are offered in good faith but we cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. Any buyer should instruct their agents, or their surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to sale, price change, location or withdrawal without notice.

29.5m Steel Workboat Catamaran

Listing ID - 4895