The benefits of offshore aquaculture are mainly centred on the fact that nearshore farming operations often conflict with local fisheries, recreational activities and coastal aesthetics. Also, moving aquaculture facilities to less polluted marine enviroments offshore can improve the quality of the harvest. Moreover, with high flushing rates in the open ocean, the impacts of effluents from aquaculture production on benthic communities can also be reduced.
The contraints of offshore aquaculture are centred on the fact that it is expensive to operate, require sturdier infrastructure than nearshore systems, they are more difficult to access and high labour costs in comparison to near shore systems

Innocent,
this is definately something that needs to have more investigation done into it, especially in a very tight labour market and the number of other constraints that you have mentioned. Do you see any major advantages to having it offshore, or is this really a pipedream that may never eventuate