The Duke of Edinburgh is hoping to give Britain's Olympic sailors a boost on Tuesday.
The Duke is visiting the Olympic venue in Weymouth, southwest England, and is expected to venture out on a boat to watch the British athletes competing.
He'll be keeping a close eye on Britain's triple gold medallist Ben Ainslie, who slipped to third overall in the Finn class on Monday.
It's unclear if the Greek-born Duke - otherwise known as Prince Philip - will speak to other nation's sailors during his two-day visit.
Danish Prince Consort - father-in-law of Tasmanian-born Princess Mary - also visited the Olympic sailing event on Monday.
Henrik, husband of Queen Margrethe II, spent much of the day watching Jonas Hogh-Christensen who is leading the Finn class.
The French-born prince, 78, then met the rest of the Danish sailing team back at the boat park.
The Danish royal family have strong links to sailing.
Crown Prince Frederik has competed at European and world championship sailing events and has previously raced against Australia's world champion 470 sailor Malcolm Page.
Prince Frederik famously met his Australian wife at the Slip Inn, Sydney, while attending the 2000 Games.
Princess Mary is currently attending Olympic events in London.