Rachael MacColl, 25, said she has not given up hope since husband Timmy MacColl, 28, vanished while on shore leave in Dubai on May 27.
But she revealed their seven-year-old son Cameron now believes “Daddy is in heaven”.
Appeals to trace the Leading Seaman - who is said to have got into a taxi back to port at around 2am after a night out - have drawn blanks.
But Mrs MacColl - who gave birth to the couple’s third child, daughter Eriskay, last month - still believes her husband of six years may be alive.
Mrs MacColl, whose family is originally from Killin, Stirling, today described the effect his disappearance has had on Eriskay, Cameron, and daughter Skye, four.
Surrounded by family and friends at Timmy’s home port of Portsmouth, Hants, she said: “My daughter thinks her daddy is still going to come home.
“Only this weekend, she asked: ’Do they look for daddy in the dark?’
“She also said: ’I hope he comes home soon.’
“My son is a little bit older and he believes his daddy is in heaven and is never going to come back.
“He says he is the man of the house now. He has taken charge of the TV remote and has taken his dad’s seat.
“Eriskay is not going to have the chance to know her dad unless our appeal to find him is successful.
“I do believe sometimes that Timmy is sitting in a police cell, having been mistaken for somebody else.”
Shock ... Royal Navy sailor, husband and father Timothy has never seen his baby daughter
Mrs MacColl last spoke to her husband, who she described as her “soul mate, first love and best friend”, two days before he disappeared.
He was excited about her pregnancy because she had given him her 20 week scan pictures of Eriskay as a six year wedding anniversary present.
The Scottish sailor had proudly shown the scan to crewmates.
Mrs MacColl said she collapsed when navy officers called to deliver the news that Timmy was missing.
She added: “My head could not understand what they meant.
“For the last five months, I have sat at home unable to give up hope, unable to move forwards, unable to grieve.”
Timmy’s shipmates say they put him in a taxi outside a night club in the early hours of Sunday, May 27, to return to their ship HMS Westminster.
He did not arrive back on board at its berth in Port Rashid and has not been seen since or made contact with his family or the Royal Navy.
A taxi driver questioned by police recalls dropping a sailor back at port that night.
Navy attacked by spiders
Staff at a Royal Navy airbase are being forced to wear gloves - after an invasion of poisonous SPIDERS. Hundreds of noble false widow spiders - about the size of a 50p piece - have been spotted at Royal Naval Air Station Culdrose Culdrose in Cornwall.Workers at one factory on the site are now wearing latex gloves to stop them getting bitten by the arachnids - which have bee-like stings.
BRIDPORT: Naval Association mark Trafalgar Day
THE Bridport branch of the Royal Naval Association commemorated Trafalgar Day this year with a new White Ensign flown above the Town Hall.
Sixty-six members and friends enjoyed a formal dinner and dance at Highland’s End, Eype where branch president, Captain John W G Bench CBE, Royal Navy presented certificates of appreciation to Valerie Baldwin and Gerry Bevis OBE in recognition of their contribution to the work of the association and the Bridport branch in particular.
Both have been associate members of the organisation for more than 20 years and are described as instrumental in the success of the branch.
Valerie Baldwin also received the Nelson Trafalgar Trophy as ‘Shipmate of the Year’ which is awarded annually by members voting for who they consider has given outstanding service to the branch over the last year.
Prison officer shot dead in ambush
A long-serving prison officer has been gunned down by dissident republicans in a motorway ambush in Northern Ireland.
Married father-of-two David Black,