Tunnel Thruster · Bow/Stern Thrusters
Jastram Marine JA-TT-100 bow is listed as a Stern Thrusters / Tunnel Thruster within the Bow category. It is typically installed in a transverse tunnel or retractable/azimuthing installation near the bow or stern, with drive machinery inside the hull. Its engineering role is to generate lateral or vectored thrust for maneuvering, station keeping or low-speed handling. The source entry additionally records power 100.0 kW. The complete model designation should be retained when matching drawings, certificates, service information and spare parts because neighboring variants may differ in configuration even when they share the same equipment family. The exact shipboard arrangement and interfaces remain installation-specific and should be checked against the vessel’s approved drawings and equipment documentation. Where an operating value, tolerance, wear limit or setting is not explicitly stated in the source data, refer to the manufacturer documentation for the exact figure.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
Other models of the same equipment type, Jastram Marine first.
What our service work and the manufacturer documentation say about keeping this model running.
Inspect drive machinery, lubrication, seals, bearings, propeller condition, control feedback and electrical or hydraulic interfaces. Review oil condition, leakage and vibration trends and verify correct response to bridge commands. Exact wear limits and service settings must follow manufacturer documentation.
Carry approved seals, filters, sensors, control fuses, selected hydraulic or electrical service parts and other maker-recommended critical spares.
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