Rynda Crewing

Seafarer documentsSpecialist qualifications and training

GWO BTT – Hydraulic

BTT

  • GWO BTTH
  • Brief entry
  • Checked 1 October 2026
Document type
Document
Validity
As shown on the issued document

Brief entry: the name, code, purpose and source. A full entry will follow.

Contents2

1 What it covers

Basic work on wind-turbine hydraulic systems under supervision.1

Who needs it. Wind-industry personnel performing the relevant work.1

2 Validity and renewal

Document validity. The expiry date, if the issuing system sets one, is shown on the document itself. This reference does not calculate personal expiry dates.

Sources (1)
  1. Basic Technical Training Standard V11Global Wind Organisation · V11 · provision: §§3, 5.5–5.7, pp.23–24 · checked 1 October 2026

Revision of 7 October 2026

Reference information based on regulatory documents, not legal advice. The reference does not verify a personal document and does not promise its recognition by any flag.

GWO BTT – Hydraulic (GWO BTTH): who needs it, validity | Rynda Crewing