scope:

Scope and Application (1 August 2021)

The installation of a wind assisted propulsion system is to be considered as an auxiliary propulsion system that augments the primary propulsion system. Thus, the vessel must be fully operable and in full compliance with applicable ABS Rules with main propulsion means only. Other types of applications will be considered on a case-by-case basis.

At a minimum, a vessel having a wind assisted propulsion system installed is to comply fully with the minimum class requirements prescribed in Section 1, Table 1 and applicable Rules. The optional notation Wind-Assisted may be assigned at the request of the owner for an installation complying with these minimum class requirements.

The optional Wind-Assisted+ notation may be assigned if the vessel complies with the additional requirements listed in Section 1, Table 1.

The optional Wind-Assisted Ready notation may be assigned if a vessel complies with the requirements listed in Section 1, Table 1 for the anticipated wind assisted propulsion system to be installed in the future. At the time of the actual installation of the wind assisted propulsion systems, a vessel with Wind-Assisted Ready notation is to comply fully with the minimum class requirements prescribed in Section 1, Table 1 and applicable Rules.

Note: For a vessel with the Wind-Assisted Ready notation, certain items (such as the size of the rudder or bridge visibility) are likely to be affected when the actual wind assisted propulsion systems are installed on the vessel. Consideration of the items marked "No" for this notation may minimize the impact at the time of system installation.

When Type Approval for a wind assisted propulsion system is requested, applicants should contact ABS for the approval process. For ABS Type Approval Program requirements, please refer to Appendix 1-1-A3 of the ABS Rules for Conditions of Classification (Part 1).