Deckvest Vito Offshore 170N Hammar lifejacket with fitted HRS system (DW-VT / H170 / HRS) by Spinlock®. Deckvest VITO is the latest Spinlock inflatable lifejacket harness technology, based on Spinlock design work for the Volvo Ocean Race. All teams were equipped with the same inflatable lifejacket harness developed in collaboration with a core group of Volvo offshore sailors. Fundamental to the new design was a lifejacket that the crews actually wanted to wear more often, with custom features developed.