Regarding your second question Miami-Florida, New York-NY and San Juan-Puerto Rico are the US ports that most commonly serve DR.
Regarding yur first question you might find answers contacting:
Asociaci?n de Navieros (Shippers Association)
Puerto de Haina, Margen Oriental,
Edif. Naviero 3era planta
Santo Domingo, R.D.
Tel: (809) 539-6080 Fax: (809) 539-7079
Maritima Dominicana, S.A.
PO Box 1301
Carretera Sanchez Km 12 1/2
Santo Domingo
Telephone:+1 (809) 539 6000
Telex: RCA 32 64 244 (mardom)
Fax:+1 (809) 539 7200; (809) 539 7300
E-mail: mar.dom@codetel.net.do
Website: http://www.mardom.com
Frederic Schad, Inc.
Head Office
26 Jos? G. Garc?a St.
Santo Domingo, Dominican Republic
Tel. : 809-221-8000
Fax : 809-688-7696
Telex : 3264122
E-mail: mail@fschad.com
Website: http://www.fschad.com/
Mailing Address from abroad:
EPS A113
P.O. Box 524121
Miami, Fl 33152-4121 USA