Foreign owners are still reeling from a nasty ‘shock’ from tax office ‘Diana’.

Offshore shipowners’ costly deadlock with Brazilian tax authorities appears to have been broken finally and decisively by a presidential decree but the situation will become clearer in a few weeks, says an expert industry source in Rio de Janeiro.

The recent flurry of Brazilian charter contracts for offshore-support vessels (OSVs) focussed market attention on the lucrative deals with state-owned oil giant Petrobras.

However,