Two missiles were fired at the mosque, in the Kofal military camp west of Marib, officials said.
The war in Yemen has killed more than 10,000 civilians and displaced over 3 million people.
It is believed that the boat was headed towards Sudan, and the UN Refugee agency has said that the dead Somalis were carrying official UNHCR documents.
The agency didn't say who carried out the strike.
Yemen is hosting over 255,000 Somali refugees.
Volunteers help recover bodies from the boat after the attack. The asylum-seekers were then able to hold up flashlights to show the aircraft that they were migrants. Mohammed was unharmed in the attack.
It was not clear who the helicopter belonged to.
The rebel-controlled Saba agency said the refugees had been attacked from the air by the Saudi-led coalition battling the insurgents, but did not provide further details. There was no immediate coalition comment.
During the past few weeks, the Saudi-led Arab coalition intensified airstrikes on areas along Yemen's Red Sea Coast in an apparent attempt to support Yemeni government forces to kick the Shiite Houthi group out of the port city of Hodyada.
"The attack took place in the Red Sea off Yemen, late Thursday", IOM spokesman Joel Millman told a news conference in Geneva.
He added that they were aware of 80 survivors brought to hospitals in Hodeidah. The spokeswoman for the United Nations refugee agency in Yemen, Shabia Mantoo, confirmed that refugees were killed, but did not cite any specific casualty count.
Yemen's Houthi rebels reported shooting down a Saudi Apache helicopter in Hodeideh province on Thursday. It also said that the dead included women and children.
That claim could not be immediately confirmed.
Yemen has been under an aggression by Saudi-led coalition since March 2015.
African migrants continue to head to Yemen, a transit point to Saudi Arabia where they seek jobs and a better life.
This will allow you to add Skills, sign into services that you use (such as to play music), and configure Alexa to your liking. Much like Siri, users can use Alexa to ask any number of questions about historical figures, events, music, sports and more .
Wayne is Tillerson's middle name and "Tracker" is likely a reference to his past involvement in the Boy Scouts of America. After a four-decade career at the company, Tillerson, 64, left this year to become President Trump's secretary of state.
The new executive order will ban travel from six countries , instead of seven, and it will no longer affect current visa holders. They have requested a hearing on the case and the Department of Justice is expected to respond soon.
The Repatha study results are being presented and discussed today at the American College of Cardiology annual meeting. The researchers hope that with more time, they can show Repatha can prevent early deaths. "I don't think so".
Heading into the earnings release, covering analysts have a consensus target price of $2.22 on Penn West Petroleum Ltd. shares. The Return on Investment (ROI) is at -50.6% while it's Return on Equity (ROE) value stands at -75.6%.
In the video rubble can be seen being thrown into the air as people try to distance themselves from the growing steam cloud. Ms Morelle said everyone on the mountain was quickly evacuated by rescue teams and guides who were "brilliant".
Another woman, Asma Bougnaoui , was dismissed from a French company Micropole, in 2008, after she also wore the headscarf to work. "What a business can not do is make up the rules in retrospect to try and justify its position".
There are other disputes on the horizon between California and the Trump administration, but this is the first big one. A senior White House official said Tuesday that the administration wants to negotiate one national standard.
While Chicago braced for its first snowfall in months, larger snowstorms were expected on the East Coast. Around three to six inches of snow are expected on the ground in most of the Chicago area by 3 p.m.
West Brom game 'vital' as Wenger makes top-four admission
So overall that's our targets. "They are at home, playing Arsenal , and this is what the fans turn up for week in, week out". James Morrison has found the back of the net in two of his last three Premier League games against Arsenal at The Hawthorns.
Clichy: Man City players to blame for European exit
But it was not enough, and Monaco's players rushed to the centre circle to mob each other as the final whistle blew. Against a Monaco defense which has been poor all season, Agüero will feel he should have gotten at least one goal.
Pandora launches premium music service
Sorrell added: "The fundamental issue is that you [Google] have to take responsibility for this as a media company". Open Pandora Premium and you'll see the familiar look and feel that has always made Pandora so easy to use.
Venezuela rallies past Italy 4-3 to reach 2nd round of WBC
The Venezuelans advanced despite giving up 35 runs in the first round, the third-highest mark in the history of the tournament. Jair Jurrjens picked up the win after striking out five batters and holding Israel to one run and five hits over six innings.