Germany, to present a technical paper title “Wave Loads on Vertical Cylinders” at Intl. Conf. On Marine Research, Ship Tech. And Ocean Engg. Sep.27, Oct.2, 1982 held in Hamburg.

Canada, as a participant for Intl. Training program on Exclusive Economic Zone at Dalhousie University, June 13 – Aug. 19, 1983.

Hawaii, USA to present a technical paper titled, “Coastal Engineering Problems in India – An Overview” at pacific congress on Marine Technology, April 24 – 27, 1984.

Germany, as a Visiting Scientist at Technical University, Berlin, Feb. ‘87 – Jan. ‘88.

Halifax, Canada to present a paper titled “Distribution of Long shore Currents and Sediment Transport Rates in the Surf Zone off Paradeep, India” at Oceans 87, 28 Sep. – 1 Oct. 1988.

Germany, as a European Community postdoctoral fellow to Institute for fluid mechanics and computer applications in Civil Engineering, University of Hannover, Jan. ‘91 to June ‘91.

Germany, invited by Institute Fluid Mechanics and Computer application in Civil Engineering, University of Hannover, June-July ‘92.

Germany, invited by Franzius Institute, Hannover, May-July ‘93.

Germany, invited as Visiting Professor by German Science Foundation for the period May-July ‘94 and Dec.’94.

Japan, to present a paper in an Intl. Conf. HYDRO PORT ‘94, 19-21, Oct.’94.

Germany, under Joint project sponsored by German Science Foundation during the period 14 May – 6 July ’95.

Germany, under Joint project sponsored by German Science Foundation during the period 4th May – 4th July’96. 

Malaysia, to present two papers and to Chair a Session in an Intl. Conf. On 10th Congress of APD-IAHR during the period 26 August -29 Aug’96.

Seoul, Korea to present a paper in an Intl. Conf. On The Third Asian-Pacific Conference on COMPUTATIONAL MECHANICS during the period 16-18 September 1996.

Germany as Visiting Professor invited by German Science Foundation (May’97 – August’97).

San Fransisco, USA to present papers in IAHR Specialty Seminar on Multidirectional Waves and their Interaction with Structures (10 – 15 August 1997)

Istanbul, Turkey to present papers and chaired a Technical session in the 8th Congress of International Association of Mediterranean (IMAM’97) (2-9 November 1997).

Germany, under Joint project sponsored by German Agency for Technical Cooperation during the period 16th May – 10th July’96. 

Leipzig, Germany under joint project sponsored by German Agency for Technical Cooperation (GTZ) during the period 15th May to 15th July 1998.

Palm Beach, Florida, USA to present papers in International Coastal Symposium during the period 20 – 23 May 1998.

Lisbon, Portugal to present paper in the 17th International Conference on Offshore Mechanics and Arctic Engineering (OMAE’98) during the period 5-9 July 1998.

Hong Kong, China to present paper in the Seventh International Symposium on River Sedimentation and the Second International Symposium on Environmental Hydraulics, 15 – 19 Dec 1998.

Singapore to discuss about joint research project under a MOU singed between National University of Singapore Madras, 21-31 Dec, 1998. 

Cape Town, South Africa to present a paper and chair a technical session in the COPEDEC V Conference during 19 -24 April 1999.

Victoria, B.C, Canada to present a paper in the Canadian Coastal Conference, 1999 during 19-23 May 1999.

Genoa, Italy to present a paper in an International Conference on Monitoring and Control of Marine and Harbour Structures during 1-4 June 1999.

Leipzig, Germany under joint project sponsored by German Agency for Technical Cooperation (GTZ) during the period 02-30 December 1999.

New Orleans, USA to present papers in OMAE 2000 Conference on Energy for the New Millennium during 14-17 Feb 2000.

Ischia, Naples, (ITALY) to present paper in the International Maritime Association of Mediterranean, IX Congress, (IMAM 2000), 2-6 April, 2000.

Leipzig, Germany under joint project sponsored by German Agency for Technical Cooperation (GTZ) during the period 17 May – 30 June 2000. 

Bander Abbas, Iran to present papers in ICOPMAS 2000 conf during 19 -23Nov, 2000

T.U. Delft, The Netherlands visiting Fellow invited by Stichtung Her Lamminga Foundation 4-20 Dec,2000

Varna, Bulgaria to present a paper in Intl. Conf. On Marine Industry (MARIND’96) 2-7 June’96

Subang Jaya, Malaysia, to present two technical papers in Asia-Pacific conference on offshore systems, April 23-26, 2001

Germany Visiting Professor to Univ. of Wuppertal, Germany invited by DAAD, Germany 1Oct 2001 to 30 Sept 2002

London, U.K to participate in Visnet (Violent waves interaction with Structures) working group workshop in London, 30Nov 2001

Canada to deliver an invited lecture in Queen’s University, on 15th April 2002

 Glasgow, U.K to participate in Visnet (Violent waves interaction with Structures) working group workshop in, 26 Apr 2002

Singapore, to present papers in 13th Congress of the Asia and Pacific division of the IAHR, 6-8, August 2002.

Germany Visiting Professor to Univ. of Wuppertal, invited by DAAD, Germany 2June –20 July 2003

SriLanka, presented papers and chaired technical sessions in COPEDEC VI, Sep 15-19’ 03

Germany Visiting Professor to Univ. of Wuppertal, invited by DAAD, Germany 10May –10 July 2004 

Canada To present a paper in 23rd Intl. Conf. On Offshore Mechanics & Arctic Engg (OMAE’04) 20-25 June’04, Vancouver

Hongkong To present a technical paper, chairing a session in 14th Asia Pacific division of International Associ of Hydraulic Research (APD of IAHR), 15-18th Dec 2004 in Hongkong and to also present the preliminary arrangement for 15th APD of IAHR to be held in IIT Madras in 2006.

Germany, Visiting Scholar to University of Cottbus under Erasmus Mundus Program of European union from 6th May to 6th July 2005

Canada, To present a paper in 2nd Annual Canadian Research and Hazards Networking Symposium, 17-19 Nov’05, Toronto, Canada

U.A.E, To present a few papers in 1st International conference and exhibition in coastal zone management and engineering”, Dubai 27-29 Nov 2005.

Germany Visiting Professor to Univ. of Wuppertal, invited by DAAD, Germany 10 May –10 July 2006

Italy To present a paper in 2nd workshop on coastal processes and port Engineering, 29 May -1 June 2006, Univ of calabria-Cosenza, Catania

Japan to participate as an invitee in the Inaugural meeting of Port-city University League (PUL), 7-9 Nov 2006

Hongkong, to participate and present two papers in “Launching symposium of Journal of Hydro-environment Research” Jan 18-19, 2007

Australia to present a paper in the 9th International Coastal Symposium, Gold Coast, 16-20 April 2007

Germany Visiting Professor to Univ. of Wuppertal, invited by DAAD, Germany 05 May –10 July 2007

France as a panelist for two sessions, (i) Natural disasters & Industrial accidents and (ii) Environment and safety in the IIT-EU T2B conference held in Paris on 11 May 2007

Venice, to participate in 32nd IAHR to present a technical paper as well as to chair the meeting of the Executive committee of the Asia-Pacific division of Intl.Association Hydraulic Engg research, 29 june-4 July 2007

Dubai, UAE to participate in the 7th PIANC-COPEDEC, 24-28 Feb2008 and to represent APD-IAHR

Nagoya, Japan to participate in the 8th Intl. Conf on Hydro-Science and Engineering and to participate in the IAHR council meeting 8-12 Sep 2008, , Nagoya, Japan 

Beijing, China Delivered a key note lecture on “Flooding during Natural Coastal Disasters- Role of vegetation” in the High-level International Forum on Water Resources & Hydropower, , 17-18 Oct 2008    

Nanjing, China to participate in 16th APD-IAHR congress 20-23 Oct 2008 delivered a keynote lecture on “Research on Tsunami Mitigation Strategies” and a paper.

Dubrovnik, Croatia- delivered keynote lecture “Impacts of Climate Change on Indian coasts prospective solutions for the future, in Intl Conf on marine wastewater discharges & marine environment, MWWD 2008 27-31 Oct 

Dhaka, Bangladesh-delivered keynote lecture on Role of vegetation in attenuating wave run-up” in International workshop on Tsunami Vulnerability, Dhaka, Bangladesh organized by Ministry of food & disaster management, Govt. of Bangladesh, 20-22 Jan 2009

Vienna, Austria to present a paper in European Geo-Sciences Union General Assembley, Vienna, Austria, April 19-24 2009

Honolulu, USA to participate in the meeting of the editorial board of Ocean Engineering journal

Trondhiem, Norway as visiting Professor to Nowegian University of Science & Technology 15 Aug-30 Sep 2009

Alexandria, Egypt to present a paper in international conference on coastal zone management of river deltas and low land coastlines (czmrdllc) 2010, 6-10 mar 2010, 

  Auckland, New Zealand as Chairman, IAHR-APD participated in 17th Congress of the Asia and Pacific Division of the International Association of Hydraulic Engineering &Research, 21-24 Feb 2010.

  Liverpool, U.K to present a paper in 32 nd PIANC 10-14 May 2010.

  Shangai, China, to present a paper and chair a session in Ninth International Conference on Hydrodynamics11-15 Oct’10

  Muscat, OMAN, to present a paper and chair a session Second International Conference on Coastal Zone Engineering and Management (Arabian Coast 2010), November 1-3, 2010

  Singapore to deliver a few lectures and to participate in a short course/Workshop on Coastal Modelling organised by Nanyang Tech univ during 21-25 Feb 2011

 Sccezin, Poland to participate and chair a session in International Coastal Symposium, 9-14 May 2011

 Moskow, Russia, to deliver lecture and in connection with joint research project with Obukhov Institute for Physics of Atmosphere of the Russian Academy of Sciences, 7-17 July 2011

 Trondheim, Norway as Erasmus Mundus scholar invited by European Commission to teach in Marine Civil Engg, NTNU from 15 Aug to 14 Nov 2011.

  Sandiego, USA to chair a session in Coastal Engineering practice conference organised by ASCE, 20-24 Aug 2011.

  Hong Kong, China, International Conference on Asian and Pacific Coasts (APAC 2011), Dec 14-16, 2011.

  Merida, Mexico under invitation of Anahac Mayab University, delivered a few lectures during 6-8 May 2012.

  Jeju, South Korea, under invitation to chair a keynote for 18th Congress of the Asia & Pacific Division of the International Association for Hydro-Environment Engineering and Research (IAHR-APD 2012) !9-23 Aug 2012

  Rincon, Puerto Rico to present a paper in 8th International Multi-Purpose Reef & Surf Sciences Symposium Feb19-21, 2013

  JSPS fellow to Tohoku University, Japan awarded by Japan Society for the Promotion of Science, Mar-Oct 2013 during which delivered invited lectures in Tohoku univ, Saitama univ, Kyto univ, Waseda univ, Yamaguchi univ and Hokkaido univ.

  Seoul, S. Korea, to participate in JHER editor’s forum meeting 22-23 July 2013

  Singapore as expert member of the committee to review the project on Coastal Adaptation Study” (CAS) for Building & Construction Authority, Singapore 12-16 Jan 2014.

  Portugal, to present a paper in 3rd IAHR Europe congress 14-16 April’14 in univ of Porto and to deliver an invited talk in univ of Lisbon.

  USA, Atlantic city to present a paper in Energy Ocean 3-5 June’14.

  Mauritius- To conduct a Design of Coastal Adaptation structures (soft measures), for Ministry of environment, Mauritius, Aug 4-8, 2014.

  Lisbon, Portugal, to participate in 1st International Conference on Renewable Energies, RENEW 2014 held during 24-26 Nov 2014.

  Mauritius to conduct a Continuous Professional Development course in Univ of Mauritius on “Ocean Data Collection and Analysis." 26-29 Jan 2015, sponsored by The Ministry of Environment & Sustainable Development (CPD), Govt of Mauritius

  Singapore-As a member of the panel of experts to review the progress Caostal Adaptation study for Singapore conducted by BCA, Singapore during 4 to 6 Feb 2015. 

  Lisbon, Portugal- As visiting professor under Plenose Joint project with Univ of Reggio, Italy during 1 to 30 April 2015

  Reggio, Italy- As visiting professor under Plenose Joint project with Univ of Reggio, Italy during 1 to 30 April 2015

  Moscow, Russia- In connection with Indo Russian project during 15 to 22 May 2015

  Trondhiem, Norway. In connection with Indo Norwegian project during 25-29 May 2015

  Kona, Hawaii, USA to participate in ISOPE 2015 during 20 to 24 June 2015

  Edinburg & London, UK to participate in workshop on ocean energy and to deliver lectures, 20 to 24 Sep 2015.

 Germany, to participate in the DAAD Alumni Seminar 2015 during 8 to 14 November 2015

  Mexico, to deliver keynote lecture in the third Intl workshop on Geosynthetics and modern materials in coastal protection & related applications, Merida, 2-4 Dec 2015.

 Mauritius, Discussion on the project for Coastal Adaption Works at Mon Choisy and Riviere des Galets from 7 to 8 February 2016

 Nizhny, Russia to discuss on joint Indo-Russian project from 7th to 13th May 2016.

Dubai, UAE to deliver a keynote lecture on " Adaptation to Natural Coastal Hazards-Case Studies Along The Indian Coast ", Arabian Coast (3rd International conference on coastal zone engineering and management in the Middle East), UAE, 20-23 November 2016.

 Calabria, Italy, Mediterranea University of Reggio in connection with project durig 16th June to 15th July 2017

Wuppertal, Germany, University of Wuppertal, visited university and delivered a lecture from 6-7 July 2017 

 Germany, to attend DSFD Conference, Germany from 10-14 July 2017

Dublin, Ireland, to visit universities from 21 to 26 august 2017

Cork, Ireland, University College Cork, to attend 12th EWTEC 2017 conference from 27th August to 1st Sept. 2017

Qingdao, China to attend the Second Ocean Surface Waves and Wave-Coupled Processes Workshop at Australia-China Centre for Maritime Engineering, Qingdao, China 10.10.2017 to 12.10.2017

Rice University, USA in connection with project from 7th -23rd December 2017

Texas, USA, Visit to Texas A&M University and University of Texas from 24th December to 12th January 2017

Mauritius, Discussion on the detailed project report for Project Trident from 16th to 18th January 2018.

Dubai, UAE, to attend the Coastal Engineering workshop from 28th Feb. To 4th Mar’18

Bangkok, Thailand, presented a paper in RIMES workshop during 23rd to 26th March 2018.

Mauritius, University of Mauritius, attend the Local Organizing Committee meeting of the Fifth International Conference in Ocean Engineering from 18th to 21st May 2018.

 London, U.K, DST-UKIERI project visit from 28th May to 10th June 2018

Charleston, USA to participate in OCEANS2018 IEEE conference, 22-25 Oct 2018

Tampa, USA to participate in the conference Coastal Structures 27-30 May 2019

Marseilles, France, to present a paper in IEEE OCEANS 2019 conference, 18-20 June’19

Mauritius, organising secretary 5th Intl conf in Ocean Engg, ICOE 2019, 29 July-1 Aug 2019.

Hanoi, Vietnam, to attend the APAC Intl scientific comm mtg 26-28 Sep 2019.

Germany, RWTH Aachen under ABCD centre through DAAD.

Univs of Telaviv and Haifa, ISREAL to deliver lectures in oct-Nov 2022

Taipei, Taiwan To deliver a lecture in National Taiwan University and for discussion, Taiwan 26-29 Nov 2022

Bangkok, Thailand. To participate in Water security and climate change WSCC2022, 1-3Dec 2022

RWTH Aachen, Germany, research Fellow invited INDO-GERMAN Centre for sustainability, IGCS , 1 May to 31 July 2023 

Vienna, Austria, to receive IAHR Fellowship award IAHR during 40th IAHR Congress, 21-24 Aug 2023 

Tokyo, Japan to receive the “Hamaguchi Award” for the Enhancement of Tsunami and Coastal Disaster Resilience, 30 Oct ’24.