It is when the casket is thrown into the ocean.
Usually for a cremation service only. There are special rental casket which can receive an inner cremation casket. After the service the cremation casket is taken out of the oversize rental casket and taken to the crematory.
Casket costs vary according to the type of material the casket is made of, the quality of the construction, and the type of interior used.
A Burial is when the casket is lowered into the ground with the body, intact, inside. A Cremation is when the casket and the body are burned into ashes, then give to family/friends. A burial is often much more expensive that a cremation.
Batesville Casket Company, the largest firm in the industry
The U.S. casket industry has its origins in the 1800s. Merchants operating furniture stores were called upon by the community to supply a casket at the time of a death.
The main benefit is for the cemetery: a vault prevents the grave from caving in as a result of a breakdown of the casket and / or the use of heavy cemetery maintenance machinery. In addition to that, a - hermetically sealing - vault may provide the relatives with the peace of mind that at least for some decades no groundwater and no insects can enter the casket.
No state law in Georgia requires a casket or vault, however some counties now do. This was in reaction to the nascent 'Green Burial' movement.
Define burial vault. If you are refering to the out container that a casket is placed into I refer you to ---- http://www.cemeteries-of-tx.com/LAWS.htm
NAICS Code(s) 339995 (Burial Casket Manufacturing)
In modern language, the word casket means either a box, for example a small box for jewels, or a burial receptacle. In the latter sense, casket is synonymous with coffin. The word has its origin in late Middle English. .
Burial vaults protect the casket, while casket liners protect the body in the casket. Casket liners are either used for long distance shipments (especially overseas) or for protective purposes in wooden luxury caskets. The former ones are usually made of zinc (sometimes possessing a small glass lid), the latter ones are usually made of copper or bronze and have oftentimes a full length oval plate glass lid.