Peter Burling and Blair Tuke's on-board living quarters show Volvo Ocean Race a test of endurance

The cramped living conditions of Kiwi Volvo Ocean Race sailors Peter Burling and Blair Tuke have been revealed, showing the round-the-world journey is a test of endurance as well as skill.

The race is not for the faint hearted, involving eight to nine months at sea, sailing from one port to the next and 10-metre swells.

Burling and Tuke are racing for different teams - Burling for Dutch entry Team Brunel and Tuke for Spain's Mapfre.

Seven Sharp decided to see who has the rough end of the stick when it comes to maritime living.

The programme found the race is a test of toughness, with bad sleep, worse food and weird toileting arrangements for the sailors.

"Some people just go off the back," Tuke admitted.

The Kiwis sailors spend months at sea in cramped quarters. Source: Seven Sharp