Arch Insurance International has appointed Danielle Whitlock (pictured) as senior marine hull and war underwriter, effective immediately, adding to a team facing elevated complexity in war-risk assessment at a moment when independent commentary from rival underwriters is flagging worsening geopolitical conditions for the sector.
Whitlock is responsible for supporting the growth of Arch's marine hull and war portfolio, covering primary and excess coverage across a broad range of vessels and interests. She reports to Jason Page, head of marine hull and war, and is based in London.
She brings more than 20 years of marine insurance experience spanning both broking and underwriting. She joins from WTW, where she was an associate director in the marine division, and has held prior roles at Lochain Patrick Insurance Brokers, The Standard Syndicate and Novae Syndicates. That combination of underwriting and broking experience on both sides of the desk is the detail most relevant to the brokers she will now deal with.
Page said Whitlock is highly regarded in the marine hull and war sector, bringing significant market expertise and a proven ability to develop strong, long-term relationships with clients and brokers. He added that she will play a key role in the continued growth of the portfolio as Arch amplifies its relevance across the market.
Underwriters at Markel International said earlier this month that worsening geopolitical conditions are creating real challenges for hull and cargo underwriters specifically, a dynamic that sits at the centre of the war portion of Whitlock's remit alongside primary and excess hull coverage. The appointment also fits a broader pattern at Arch through 2026: the insurer has made a series of senior underwriting appointments across casualty and specialty lines this year, consolidating expertise under more senior underwriters as it builds out its London market presence.
For brokers placing hull and war risk with Arch, Whitlock's broking background, most recently inside WTW's marine division, is worth factoring into renewal conversations. An underwriter who has worked the broker side of a major global firm understands submission and placement dynamics in a way that a career underwriter may not, and that experience arrives as war-risk complexity in the sector is genuinely rising.
