Seven ships were on fire in the Iranian port city of Bushehr, the semi-official Tasnim news agency said on Wednesday.
No casualties were reported, and Tasnim did not say how the incident started.
Fire had broken out at a shipyard, and fire crews were on site, Jahangir Dehghani, the head of the crisis management organisation for Bushehr province, told state-run Irna news agency.
Mr Dehghani said municipal and port firefighters were assisted by crews from the nearby Bushehr Nuclear Power Plant.
Irna said the shipyard builds fibreglass hulls.
Several unexplained explosions and fires have been reported around Iranian military, nuclear and industrial facilities since late June, including a blaze at the underground Natanz nuclear facility in central Isfahan province on July 2.
Natanz is the centrepiece of Iran's enrichment programme, which Tehran said is for peaceful purposes. Western intelligence agencies and the UN's nuclear watchdog (IAEA) believed there was a clandestine nuclear arms programme at the site until 2003. Tehran denies ever seeking nuclear weapons.
Senior Iranian security officials said on July 3 that the cause of the Natanz fire had been determined and would be announced at a later date.
Some officials have said the fire may have been a result of cyber sabotage, and one said that Tehran would retaliate against any country responsible for such attacks.
This month, Irna addressed what it called the possibility of sabotage by enemies such as Israel and the United States, although it stopped short of accusing either directly.
On July 5, Israeli Defence Minister Benny Gantz said his country was not "necessarily" behind every unexplained incident in Iran.
On June 30, 19 people were killed in an explosion at a medical clinic in the north of the capital which an official said was caused by a gas leak.
On June 26, an explosion occurred near the Parchin military and weapons development base about 30 kilometres southeast of Tehran.
The authorities said that was caused by a leak in a gas storage facility outside the base.
Hidden killer
Sepsis arises when the body tries to fight an infection but damages its own tissue and organs in the process.
The World Health Organisation estimates it affects about 30 million people each year and that about six million die.
Of those about three million are newborns and 1.2 are young children.
Patients with septic shock must often have limbs amputated if clots in their limbs prevent blood flow, causing the limbs to die.
Campaigners say the condition is often diagnosed far too late by medical professionals and that many patients wait too long to seek treatment, confusing the symptoms with flu.
German intelligence warnings
- 2002: "Hezbollah supporters feared becoming a target of security services because of the effects of [9/11] ... discussions on Hezbollah policy moved from mosques into smaller circles in private homes." Supporters in Germany: 800
- 2013: "Financial and logistical support from Germany for Hezbollah in Lebanon supports the armed struggle against Israel ... Hezbollah supporters in Germany hold back from actions that would gain publicity." Supporters in Germany: 950
- 2023: "It must be reckoned with that Hezbollah will continue to plan terrorist actions outside the Middle East against Israel or Israeli interests." Supporters in Germany: 1,250
Source: Federal Office for the Protection of the Constitution
2018 ICC World Twenty20 Asian Western Regional Qualifier
The top three teams progress to the Asia Qualifier
Final: UAE beat Qatar by nine wickets
Third-place play-off: Kuwait beat Saudi Arabia by five runs
Table
1 UAE 5 5 0 10
2 Qatar 5 4 1 8
3 Saudi 5 3 2 6
4 Kuwait 5 2 3 4
5 Bahrain 5 1 4 2
6 Maldives 5 0 5 0
The biog
DOB: March 13, 1987
Place of birth: Jeddah, Saudi Arabia but lived in Virginia in the US and raised in Lebanon
School: ACS in Lebanon
University: BSA in Graphic Design at the American University of Beirut
MSA in Design Entrepreneurship at the School of Visual Arts in New York City
Nationality: Lebanese
Status: Single
Favourite thing to do: I really enjoy cycling, I was a participant in Cycling for Gaza for the second time this year
The President's Cake
Director: Hasan Hadi
Starring: Baneen Ahmad Nayyef, Waheed Thabet Khreibat, Sajad Mohamad Qasem
Rating: 4/5
THE%C2%A0SPECS
%3Cp%3EEngine%3A%204-cylinder%202.5-litre%20%2F%202-litre%20turbo%0D%3Cbr%3EPower%3A%20188hp%20%2F%20248hp%0D%3Cbr%3ETorque%3A%20244Nm%20%2F%20370Nm%0D%3Cbr%3ETransmission%3A%207-speed%20auto%0D%3Cbr%3EOn%20sale%3A%20now%0D%3Cbr%3EPrice%3A%20From%20Dh110%2C000%0D%3C%2Fp%3E%0A
The biog
Name: Gul Raziq
From: Charsadda, Pakistan
Family: Wife and six children
Favourite holes at Al Ghazal: 15 and 8
Golf Handicap: 6
Childhood sport: cricket