AUSTRALIAN MARINA CONFERENCES, Sydney and Cairns, Australia, for Marinacon; 1989, 1990

BRAZILIAN NATIONAL TOURISM DEVELOPMENT CONFERENCE, Rio de Janiero, Brazil, Brazilian Ministry of Tourism/Brazilian Association of Pension Funds; 1992

ENCOMAR 3-CONFERENCE ON MARINE TOURISM, HARBORS, MARINAS, Sao Paulo/Guaruja, Brazil, ENCOMAR, Varig, EMBRATUR, Brazilian marine industry associations; 1990

HAWAII MARINA CONFERENCE, Honolulu, Kona, Hawaii, for IMI and State of Hawaii; 1993

INTERNATIONAL CONFERENCE ON MARINAS, Southampton, UK, for Univ. of Southampton; 1989,2000

INTERNATIONAL CONFERENCE ON MARINAS, PARKS, AND RECREATION DEVELOPMENTS, Milwaukee, Wisconsin, for the American Society of Civil Engineers; 1995

INTERNATIONAL MARINA & WATER TOURISM CONFERENCE, Ft. Lauderdale, FL, for ICOMIA; 1999

INTERNATIONAL MARINA INSTITUTE CONFERENCE, Ft. Lauderdale, FL , for IMI; 2001

INTERNATIONAL NAVIGATION CONGRESSES, Osaka, Japan and Seville, Spain, for the Permanent International Association of Navigation Congresses (PIANC); 1990, 1994.

INTERNATIONAL WATERFRONTS CONFERENCE, Oakland, CA, for Waterfront Center & Soulanges Canal Development Authority; 2001.

MARINA DESIGN AND ENGINEERING CONFERENCES, Boston, Nashville for IMI; 1987, 1997

MARINAS 96 CONFERENCE, Palma De Mallorca, Spain, for Catalonia Yacht Harbours Association, 1996

MRA 99 CONFERENCE, San Diego, California, for California Marina Recreation Association, 1999

NATIONAL MARINA AND BOATING ENVIRONMENT CONFERENCES, Washington D.C. and Atlanta, Georgia, for International Marina Institute; 1992, 1993

NATIONAL DRY/STACK STORAGE CONFERENCES, Ft. Lauderdale, Florida, IMI; 1993, 1994, 1998, 2001

NATIONAL MARINAS AND DOCKS CONFERENCES, Madison, Wisconsin, University of Wisconsin; '87-'01

SECRETARIAS DO MEIO AMBIENTE SEMINARS, Sao Paulo, Brazil, SMA. 1992--1995

SOUTHEAST ASIA MARINAS & WATERFRONT RESORTS CONFERENCE, Singapore, for Marinacon,1988

STATE OF PARANA COASTAL, RIVERS & LAKES TOURISM DEVELOPMENT SEMINARS, Curitiba and Guaira, Brazil , for Parana State Government and State Tourism Agency, 1995

UNIVERSITY OF SAO PAULO OCEANOGRAPHIC INSTITUTE SEMINARS, Sao Paulo, Brazil, Sponsored by the University of Sao Paulo and the Brazilian Institute of Marinas; 1993, 1994, 1999.

WORLD MARINA CONFERENCE, Long Beach, California, for World Marina Conference, Inc.; 1991, 2001