Scientific & Professional Activities

Jury Memberships

  • March 2022 Doctoral Examination

    İstanbul Üniversitesi

    Doctoral Examination

  • September 2020 Expertise In Medicine

    İstanbul Üniversitesi

    Expertise In Medicine

Memberships / Tasks in Scientific Organizations

  • 2018 - Continues Avrupa Üroloji Derneği Genç Akademik Ürologlar Böbrek Tümörü Çalışma Grubu

    Member

  • 2017 - 2020 Türk Üroloji Derneği Türk Üroloji Akademisi

    Member

Peer Reviews in Scientific Publications

  • March 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • March 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • March 2025 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • February 2025 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • February 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • February 2025 PROSTATE

    Journal Indexed in SCI-E

  • February 2025 PLOS ONE

    Journal Indexed in SCI-E

  • January 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • January 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • January 2025 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • January 2025 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • December 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • November 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • November 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • November 2024 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI

    Journal Indexed in SCI-E

  • November 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • November 2024 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • November 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • November 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • October 2024 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI

    Journal Indexed in SCI-E

  • October 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • October 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • October 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • September 2024 EUROPEAN UROLOGY

    Journal Indexed in SCI-E

  • September 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • August 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • August 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • August 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • July 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • July 2024 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • June 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • June 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • June 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • May 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • May 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • May 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • April 2024 Asian Journal of Urology

    Journal Indexed in ESCI

  • April 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • April 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • April 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • April 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • April 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • April 2024 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • March 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • March 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • March 2024 Asian Journal of Urology

    Journal Indexed in SCI-E

  • March 2024 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • March 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • February 2024 Asian Journal of Urology

    Journal Indexed in SCI-E

  • January 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • January 2024 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • January 2024 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • January 2024 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • December 2023 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • December 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • December 2023 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • December 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • November 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • November 2023 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • November 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • October 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • October 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • October 2023 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • October 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • October 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • September 2023 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • September 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • September 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • September 2023 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • August 2023 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • August 2023 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI

    Journal Indexed in SCI-E

  • August 2023 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI

    Journal Indexed in SCI-E

  • August 2023 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • August 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • July 2023 EUROPEAN UROLOGY ONCOLOGY

    Journal Indexed in SCI-E

  • June 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • June 2023 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • June 2023 PROSTATE

    Journal Indexed in SCI-E

  • June 2023 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • June 2023 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • May 2023 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • May 2023 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • May 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • April 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • April 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • March 2023 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • March 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • February 2023 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • February 2023 PROSTATE

    Journal Indexed in SCI-E

  • February 2023 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • February 2023 Asian Journal of Urology

    Journal Indexed in ESCI

  • January 2023 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • December 2022 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • December 2022 EUROPEAN UROLOGY OPEN SCIENCE

    Journal Indexed in SCI-E

  • November 2022 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • October 2022 CANCER CONTROL

    Journal Indexed in SCI-E

  • October 2022 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • October 2022 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • September 2022 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • September 2022 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • September 2022 PLOS ONE

    Journal Indexed in SCI-E

  • September 2022 UROLOGIC ONCOLOGY: SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • September 2022 PLOS ONE

    Journal Indexed in SCI-E

  • August 2022 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • July 2022 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • July 2022 TURKISH JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • June 2022 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • May 2022 REVISTA DA ASSOCIACAO MEDICA BRASILEIRA

    Journal Indexed in SCI-E

  • May 2022 THERAPEUTIC ADVANCES IN UROLOGY

    Journal Indexed in SCI-E

  • May 2022 CANCER CONTROL

    Journal Indexed in SCI-E

  • May 2022 Turkish Journal of Urology

    Journal Indexed in ESCI

  • April 2022 CHINESE MEDICAL JOURNAL

    SCI Journal

  • April 2022 UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • April 2022 Asian Journal of Urology

    Journal Indexed in ESCI

  • April 2022 CHINESE MEDICAL JOURNAL

    Journal Indexed in SCI-E

  • March 2022 Turkish Journal of Urology

    Journal Indexed in ESCI

  • March 2022 ALL LIFE

    Journal Indexed in SCI-E

  • March 2022 CANCER MANAGEMENT AND RESEARCH

    Journal Indexed in SCI-E

  • March 2022 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • March 2022 ANTIBIOTICS-BASEL

    Journal Indexed in SCI-E

  • February 2022 MINIMALLY INVASIVE THERAPY & ALLIED TECHNOLOGIES

    Journal Indexed in SCI-E

  • February 2022 Asian Journal of Urology

    Journal Indexed in ESCI

  • February 2022 THERAPEUTIC ADVANCES IN UROLOGY

    Journal Indexed in SCI-E

  • January 2022 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • January 2022 CHINESE MEDICAL JOURNAL

    Journal Indexed in SCI-E

  • January 2022 MINIMALLY INVASIVE THERAPY & ALLIED TECHNOLOGIES

    Journal Indexed in SCI-E

  • December 2021 CHINESE MEDICAL JOURNAL

    Journal Indexed in SCI-E

  • December 2021 MINIMALLY INVASIVE THERAPY & ALLIED TECHNOLOGIES

    Journal Indexed in SCI-E

  • December 2021 UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • December 2021 CHINESE MEDICAL JOURNAL

    Journal Indexed in SCI-E

  • December 2021 LIFE-BASEL

    Journal Indexed in SCI-E

  • December 2021 Asian Journal of Urology

    Journal Indexed in ESCI

  • November 2021 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • November 2021 JOURNAL OF CLINICAL MEDICINE

    Journal Indexed in SCI-E

  • November 2021 UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • October 2021 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • October 2021 CHINESE MEDICAL JOURNAL

    Journal Indexed in SCI-E

  • October 2021 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • October 2021 ASIAN JOURNAL OF UROLOGY

    Journal Indexed in ESCI

  • September 2021 Turkish Journal of Urology

    Journal Indexed in ESCI

  • September 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • September 2021 Asian Journal of Urology

    Journal Indexed in ESCI

  • August 2021 JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • August 2021 UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • August 2021 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • July 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • July 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • July 2021 UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS

    Journal Indexed in SCI-E

  • July 2021 BJU INTERNATIONAL

    Journal Indexed in SCI-E

  • June 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • June 2021 PROSTATE

    Journal Indexed in SCI-E

  • June 2021 PROSTATE

    Journal Indexed in SCI-E

  • June 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • June 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • June 2021 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • May 2021 PROSTATE

    Journal Indexed in SCI-E

  • May 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • May 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • April 2021 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • April 2021 Istanbul Faculty of Medicine Journal

    Journal Indexed in ESCI

  • April 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • April 2021 Turkish Journal of Urology

    Journal Indexed in ESCI

  • March 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • March 2021 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • March 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • February 2021 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • February 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • February 2021 BMC NEPHROLOGY

    Journal Indexed in SCI-E

  • February 2021 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • February 2021 Turkish Journal of Urology

    Journal Indexed in ESCI

  • February 2021 Asian Journal of Urology

    Journal Indexed in ESCI

  • January 2021 Turkish Journal of Urology

    Journal Indexed in ESCI

  • January 2021 JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • January 2021 THERAPEUTIC ADVANCES IN UROLOGY

    Journal Indexed in SCI-E

  • December 2020 BMC NEPHROLOGY

    Journal Indexed in SCI-E

  • December 2020 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • December 2020 BIOMED RESEARCH INTERNATIONAL

    Journal Indexed in SCI-E

  • December 2020 PLOS ONE

    Journal Indexed in SCI-E

  • December 2020 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • November 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • November 2020 Asian Journal of Urology

    Journal Indexed in ESCI

  • November 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • November 2020 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • November 2020 Asian Journal of Urology

    Journal Indexed in ESCI

  • November 2020 World Journal Of Urology

    Journal Indexed in SCI-E

  • November 2020 Annals Of Saudi Medicine

    Journal Indexed in SCI-E

  • November 2020 BIOMED RESEARCH INTERNATIONAL

    Journal Indexed in SCI-E

  • October 2020 World Journal Of Urology

    Journal Indexed in SCI-E

  • October 2020 BIOMED RESEARCH INTERNATIONAL

    Journal Indexed in SCI-E

  • October 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • October 2020 BIOMED RESEARCH INTERNATIONAL

    Journal Indexed in SCI-E

  • October 2020 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • October 2020 World Journal Of Urology

    Journal Indexed in SCI-E

  • October 2020 Asian Journal of Urology

    Journal Indexed in ESCI

  • September 2020 ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

    Journal Indexed in SCI-E

  • September 2020 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • September 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • August 2020 Asian Journal of Probability and Statistics

    Other Indexed Journal

  • August 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • August 2020 FRONTIERS IN ONCOLOGY

    Journal Indexed in SCI-E

  • August 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • August 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • August 2020 FRONTIERS IN ONCOLOGY

    Journal Indexed in SCI-E

  • August 2020 INTERNATIONAL JOURNAL OF CLINICAL PRACTICE

    Journal Indexed in SCI-E

  • July 2020 Journal Of Endourology

    Journal Indexed in SCI-E

  • July 2020 International Journal of General Medicine

    Journal Indexed in ESCI

  • July 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • July 2020 FRONTIERS IN ONCOLOGY

    Journal Indexed in SCI-E

  • June 2020 FRONTIERS IN ONCOLOGY

    Journal Indexed in SCI-E

  • June 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • June 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • April 2020 JOURNAL OF ENDOUROLOGY

    Journal Indexed in SCI-E

  • March 2020 HISTOPATHOLOGY

    Journal Indexed in SCI-E

  • March 2020 Turkish Journal of Urology

    Journal Indexed in ESCI

  • March 2020 Asian Journal of Urology

    Journal Indexed in ESCI

  • February 2020 WORLD JOURNAL OF UROLOGY

    Journal Indexed in SCI-E

  • December 2019 ASIAN JOURNAL OF UROLOGY

    Other Indexed Journal

  • November 2019 Turkish Journal of Trauma and Emergency Surgery

    SCI Journal

  • November 2019 Turkish Journal of Urology

    Other Indexed Journal

  • September 2019 Journal of Endourology

    SCI Journal

  • August 2019 Therapeutic Advance in Urology

    SCI Journal

  • July 2019 World Journal of Urology

    SCI Journal

  • March 2019 Turkish Journal of Urology

    Other Indexed Journal

  • January 2019 Journal of Endourology

    SCI Journal

  • September 2018 Urologic Oncology: Seminars and Original Investigations

    SCI Journal

  • July 2018 Journal of Endourology

    SCI Journal

  • April 2018 Journal of Urology

    SCI Journal

  • February 2016 Journal of Endourology

    SCI Journal

  • April 2015 Journal of Endourology

    SCI Journal

Scientific Research / Working Group Memberships