Electronically published by ABS Yokohama.
Reference T2474010, dated 24-NOV-2023.

CERTIFICATE NUMBER 23-2474010-PDA
EFFECTIVE DATE

24-November-2023

EXPIRATION DATE

23-November-2028

ABS TECHNICAL OFFICE Yokohama Engineering Services

CERTIFICATE OF

Product Design Assessment
This is to certify that a representative of this Bureau did, at the request ofMIKASA CORPORATION
located at

HIROSHIMA CITY
assess design plans and data for the below listed product. This assessment is a representation by the Bureau as tothe degree of compliance the design exhibits with applicable sections of the Rules. This assessment does notwaive unit certification or classification procedures required by ABS Rules for products to be installed in ABS
classed vessels or facilities. This certificate, by itself, does not reflect that the product is Type Approved. The
scope and limitations of this assessment are detailed on the pages attached to this certificate.
ProductBearing, Water Lubricated Stern Tube Bearings

Model

Type-F(Full-mold Type), Type-F-CR(Full-mold Type, Crescent Design),
Type-S(Segmental Type), Type-T(Barrel Type), Type-T-CR(Barrel Type,Crescent Design)Endorsement: OtherThis Product Design Assessment (PDA) Certificate remains valid until 23 November 2028 or until the Rules
and/or Standards used in the assessment are revised or until there is a design modification warranting design
reassessment (whichever occurs first).
Acceptance of product is limited to the “Intended Service” details prescribed in the certificate and as per
applicable Rules and Standards.
This Certificate is valid for installation of the listed product on ABS units which exist or are under contract for
construction on or previous to the effective date of the ABS Rules and standards applied at the time of PDA
issuance. Use of the Product for non-ABS units is subject to agreement between the manufacturer and intendedclient.
American Bureau of Shipping___________________________________________________
Takahiro Shibuya, Engineer/Consultant
NOTE: This certificate evidences compliance with one or more of the Rules, Guides, standards or other criteria of ABS or a statutory,industrial or manufacturer’s standards. It is issued solely for the use of ABS, its committees, its clients or other authorized entities. Any
significant changes to the aforementioned product without approval from ABS will result in this certificate becoming null and void. Thiscertificate is governed by ABS Rules 1-1-A3/5.9 Terms and Conditions of the Request for Product Type Approval and Agreement
ENG-ATT-00797

Revision 1

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Electronically published by ABS Yokohama.
Reference T2474010, dated 24-NOV-2023.

MIKASA CORPORATION
1, KUCHI, ASA-CHO, ASAKITA-KU
HIROSHIMA
Japan 731-3362
Telephone: 81-82-810-3931
Fax: 81-82-837-3947
Email: t.wada@mikasasports.co.jp
Web: www.mikasa-industry.com

Tier: 2 - PDA Issued
Product:Model:

Bearing, Water Lubricated Stern Tube Bearings
Type-F(Full-mold Type), Type-F-CR(Full-mold Type, Crescent Design), Type-S(SegmentalType), Type-T(Barrel Type), Type-T-CR(Barrel Type, Crescent Design)Endorsements:
Intended Service:
Water lubricated bearings for inland vessels, ocean going vessels, high-speed boats.
Description:
Friction free Bearing (F.F.B) Three layer structure: Special compound elastic rubber is sandwiched between Poly-tetra
Fluoro Ethylene and outer metal shell.
Rating:Type-F and Type-F-CR Shaft Diameter: 40mm - 450mm,
Type-S, Type-T and Type-T-CR Shaft Diameter: 200mm - 1000mm,Bearing Length: L>=2X(X: actual shaft dia.),
Average load on bearing: <=6kgf/cm2,Local load on bearing: <=20kgf/cm2
Service Restriction:
Unit Certification is not required for this product. If the manufacturer or purchaser request an ABS Certificate forcompliance with a specification or standard, the specification or standard, including inspection standards andtolerances, must be clearly defined.
Comments:
The manufacture has provided a declaration about the control of, or the lack of Asbestos in this product.
Notes/Drawing/Documentation:
Drawing No. --, Stern Tube Bearing Friction Free Bearing (FFB) Standard Measurements
Drawing No. -------, Submission of mill sheet for synthetic materials
Drawing No. --------, products Material Safety Data Sheet, RevisionTerms of Validity:
This Product Design Assessment (PDA) Certificate remains valid until 23/Nov/2028 or until the Rules and/orStandards used in the assessment are revised or until there is a design modification warranting design reassessment(whichever occurs first).

Acceptance of product is limited to the "Intended Service" details prescribed in the certificate and as per applicable
Rules and Standards.

This Certificate is valid for installation of the listed product on ABS units which exist or are under contract for
construction on or previous to the effective date of the ABS Rules and standards applied at the time of PDA issuance.
Use of the Product for non-ABS units is subject to agreement between the manufacturer and intended client.

STANDARDS
ABS Rules:
2023 Rules for Conditions of Classification, Part 1: 1-1-4/9.7, 1-1-A3, 1-1-A4, which covers the following:2023 Rules for Building and Classing Marine Vessel Rules: 4-3-2/5.15.1

As of 24/Nov/2023Design Assessed

Page 1 of 2Electronically published by ABS Yokohama.
Reference T2474010, dated 24-NOV-2023.

MIKASA CORPORATION
1, KUCHI, ASA-CHO, ASAKITA-KU
HIROSHIMA
Japan 731-3362
Telephone: 81-82-810-3931
Fax: 81-82-837-3947
Email: t.wada@mikasasports.co.jp
Web: www.mikasa-industry.com

Tier: 2 - PDA Issued

National:
NAInternational:
NA
Government:
NA
EUMED:NA
OTHERS:NA

As of 24/Nov/2023Design Assessed

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