"Today is just the beginning," said Francesco Compagna, a lawyer for some passengers and an injured Russian crew member, Irina Nazarova.
"It is the first day. We don't expect quick things but we think that the investigation must follow in all the directions."
De Luca added that the legal team is "working hard to show that it was not the first time that the Costa boats used to go very close to the island." He claimed to have documents to indicate the Concordia, on a previous voyage on the same route in August, was very close to the port.
Costa Crociere officials have acknowledged one previous close maneuver, but denied their ships regularly steered close to shore in publicity-drawing maneuvers.
Among those attending were relatives of some of the missing in the accident, including a French woman, Mylene Litzler.
Costa Crociere again came under the spotlight earlier in the week when a fire broke out in the generator room of the Costa Allegra, leaving the cruise ship without power and adrift in waters known to be prowled by pirates in the Indian Ocean. The ship arrived in the Seychelles after three days under tow. There were no injuries.
Frances D'Emilio reported from Rome.
- 50 things you might not know about 15 of your...
- Switched at birth, man raised in poverty...
- Former South African President Nelson Mandela...
- 1 child dead in Idaho elementary school bus...
- Court: Mormon church, members not liable in...
- Saving Africa? New book casts harsh light on...
- Obama: Income inequality a defining challenge
- Disgraced priest to wed pope adviser's daughter
- Obama: Income inequality a defining... 98
- Croatians vote against same-sex marriage 50
- Court: Mormon church, members not... 34
- Notre Dame sues over health care law's... 30
- Colorado court hears discrimination... 28
- Fast food outlets planning strike for... 25
- Fast-food strikes return amid push for... 24
- Research: Native American genes have... 23