WORKBOATS, TUGS & SERVICE VESSELS
The Real Thing
The most common tug type in operation word-wide is the azimuthing stern drive (asd) tug. While not being an actual tractor tug, the asd tug can be operated in reverse mode as reverse tractor tugs, however it is always better to have the real thing. a true tractor tug can deliver higher escort forces and superior stability compared to an ASD operated as a reverse tractor tug. Osd has extensive experience with asd Tugs, which are currently marketed as azistern designs. There are currently more than twenty different azistern (asd) designs under construction or in operation. With clients expressing an interest in tractor tugs Osd now can supply this type of tug as well. The wheelhouse design gives an excellent overview of the work-deck during escort operations and optimum visibility over the bow during transit modes. a broad towstaple on the aft-deck reduces moment of inclination caused by tension on the wire, while the spacious aft-deck itself accommodates the towing winch. The aft bulwark structure is outfitted with an integrated tow-pin arrangement. a knuckleboom crane is outfitted with outreach over the aft-deck area. The tugs can be fitted with either voith schneider cycloidal propellers (the cyclotrac 3270 model) or azimuthing thrusters (the azitrac 3270 design). The propulsion drive configuration can be adapted to client specification – diesel-electric, hybrid with or without batteries, etc. depending on engine and propulsion configuration, a bollard pull of 90 t can be achieved. Osd’s mlccompliant tugs can be delivered with a fifi1 class notation and have accommodation for 8 to 12 people.
Adapted Solutions
Osd prides itself on expertise, independence and flexibility. The new azitrac and cyclotrac designs can be adapted to meet any client requirements and this is not limited only to the choice of propulsion and bollard pull. Osd can tailor
www.s h i p b u i l d i n g -industr y.eu
OSD.indd 55
the new tractor tug design to meet other requirements such as main particulars (lxbxh), machinery systems, power management, equipment, accommodation, and class notation. Mr Wijsmuller adds, “As an independent design company, we are able to work with clients, and can produce any tug or Osv design to their specific requirements. it is good to have several basic designs so clients can see what we have on offer and these new tractor tugs are a perfect example of that.”
…an independent design company able to work with clients to produce any tug or OSV design to specific requirements…
i. www.offshoreshipdesigners.com
S B I 2016 | Vo l u me 10 | I s s u e 2 | 5 5
14-04-16 11:13