Prerequisites
The vessel is in dry dock. The SN90 system is turned off. The shipyard must provide all necessary tools and manpower. The following specific items are required for this task:
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A crane (or other lifting device) capable of lifting the entire hull unit The lifting device must be rated to minimum twice the weight of the hull unit. An attachment point for the lifting device must be located directly above the hull unit.
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Spare parts:
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Rubber gasket (Part number ) |
NoteA hull unit may be provided as an option. It allows you to lower and hoist the transducer. All information and tasks related to the hull unit and installation trunk may be disregarded and omitted if the SN90 system is installed without a hull unit.
Context
The upper parts of the hull unit include the mechanical gantry, the hoist motor, the hoisting spindle and the Motor Control
Unit. The transducer shaft is supported by the gantry, and penetrates the mounting flange. The transducer cable is placed inside the transducer shaft. The transducer is mounted to the bottom of the transducer shaft. The complete assembly is mounted on the top of the installation trunk.
NoteThe hull unit is heavy. Appropriate lifting equipment (lifting tackle, portable crane or ship’s crane) is required. You must always use appropriate lifting equipment to minimize risk of injury to personnel or damage to equipment. Only certified equipment must be used.
The upper parts of the hull unit include the mechanical gantry, the hoisting motor, the hoisting spindle and the junction
box. The transducer shaft is supported by the gantry, and penetrates the mounting flange. The transducer cable is placed inside the transducer shaft. The transducer is mounted to the bottom of the transducer shaft. The complete assembly is mounted on the top of the installation trunk.
Note
A hull unit may be provided as an option. It allows you to lower and hoist the transducer. All information and tasks related to the hull unit may be disregarded and omitted if the SN90 system is installed without this unit.