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PRODUCTS>Tug Checklist>Propulsor Installation>Large Adapter

Designer's Checklist No.1
Azimuth Stern Drive Tugs


PROPULSOR INSTALLATION

Propulsor Installation Alternatives

The Steerprop propulsors may be installed in several different configurations and variations thereof. Additional, customized installation configurations can also be arranged. The main installation modes are:


Large bolt-in mounting adapter installation:
1) the propulsor is lifted onboard;
2) the propulsor is bolted to the trunk flange;
3) the deck hatch is bolted or welded into place above the propulsor

Large Mounting Adapter
The use of a large mounting adapter allows the complete propulsor to be lifted onboard in one piece. Often it is possible to do so even with the vessel in water. This feature also enables the propulsor to be lifted off the vessel for repairs and maintenance without dry-docking the vessel.

Pros and Cons:
+ Easy and fast installation
+ Installation possible after launching
+ Complete unit
+ Adapter formed according to hull
+ Service of underwater parts possible without dry-docking
- Propulsor cost

- Weight - Aftship strength

Tug Design Checklist

General

Checklist

Main Dimensions
Hull Form
Skeg
Weight, Hydrostatics, Stability
Hull Strength
Propulsor Installation
  - Weld-In Installation
- Small Mounting-Cone
- Large Adapter
- Distance Between Propulsors
- Tilting and Heeling
Intermediate Shafts
General Layout
Propulsor Room Space
Main Engine
Escort Tugs
External Connections