Since Superstorm Sandy slammed into the northeastern coastline of the US in October, dozens of insurers and reinsurers with operations here in Bermuda have come forward with their preliminary Sandy-related loss estimates.The latest estimate comes from Hannover Re, which, earlier this week, announced it had taken a $349 million hit from the devastating hurricane. But, much like other reinsurance companies, Hannover CEO, Ulrich Wallin said its losses won’t keep the company from reaching its annual targets.“This loss expenditure leaves us comfortably within our major loss budget for the financial year just ended. Our expectation of generating Group net income in excess of 800 million euros ($1.063 billion) for 2012 remains unaffected by this loss,” Mr Wallin said.Hannover Re, and other reinsurers will report in detail on the events of the 2012 financial year in their upcoming fourth quarter earnings reports, which will start trickling in at the end of this month.Just last week, Fitch Ratings said Sandy-related insured losses will likely exceed $20 billion, but that total estimated losses could continue to rise as several insurers have yet to release loss estimates.Loss estimates have been difficult to create due to the size of the affected areas, particularly with respect to flooding and business interruption claims, which has contributed to the uncertainty in estimating losses.The ratings agency said yet-to-be-reported loss estimates from several larger insurers could add another $5 billion or more to the loss total.Below is a look at the latest estimates from companies with operations in Bermuda:Ace Ltd — The company estimates $380 million in Sandy losses, after-tax and net of reinsurance. The figure included losses from commercial and personal lines, as well as reinsurance operations.Allied World Assurance — The company expects Sandy losses of approximately $165 million, pre-tax and net of reinsurance recoverables and reinstatement premiums in 2012 Q4.Alterra Capital Holdings — The company estimates losses of between $90 million and $120 million, pre-tax and net of reinsurance and reinstatements.American International Group — The company expects losses of around $1.3 billion after-tax and net of reinsurance. The estimate reflects a pre-tax loss estimate, net of reinsurance, totaling some $2.0 billion.Amlin plc — The reinsurer estimates losses of about $236 million, net of reinsurance and reinstatements.Argo Group — The Bermuda-based insurer and reinsurer said it expects its 2012 Q4 results to include pretax losses related to Sandy of between $45 million and $55 million, net of reinsurance and reinstatement premiums.Arch Capital Group — The company’s loss estimate ranges between $170 million and $240 million, net of reinsurance and reinstatement premiums. Losses are estimated to be 40 percent from insurance operations and 60 percent from reinsurance operations.Aspen Insurance Holdings — The company estimates 2012 fourth quarter income to include around $175 million in Sandy-related losses, after-tax, and net of reinsurance and reinstatement premiums.Axis Capital Holdings — The Bermuda-based company expects losses of $300 million, net of tax, reinsurance and reinstatement premiums. The loss impact is expected to be split evenly between insurance and reinsurance segments.Catlin Group — The company estimates losses of $200 million, net of reinsurance and reinstatements.Chubb — The company estimates Sandy-related losses to be around $570 million after tax. The estimate is net of reinsurance recoverable and includes estimated reinsurance reinstatement premiums.Endurance Specialty Holdings — The Bermuda-based re/insurers estimates Sandy-related pretax losses at $160 million. $125 million of that is said to be related to the reinsurance segment, with the rest coming from its insurance business.Everest Re Group — The company estimates losses to be about $220 million, net of reinstatement premiums and taxes. The impact of this loss will largely be reflected in reinsurance segments.Hannover Insurance Group — The company initially anticipated losses of $120 million to $140 million after-tax, but revised its estimate this week to $349 million.Hiscox Ltd — The company estimates losses of approximately $146 million.Lancashire Holdings — The company expects the net impact in the $40 million to $60 million range, net of reinsurance and reinstatements. The estimate doesn’t include any benefit from the $40 million industry loss warranty cover.Maiden Holdings Ltd — The company said its loss estimate is in the range of $25 million and $35 million.Montpelier Re Holdings — The Bermuda-based reinsurer anticipates net losses of around $95 million, pretax, net of reinsurance and reinstatements.PartnerRe Ltd — The Bermuda-based company losses of between $200 million and $240 million, pretax, net of retrocession and reinstatement premiums.Platinum Underwriters Holdings — The company expects Sandy will have a net negative impact of $30 million for the 2012 fourth quarter.RenaissanceRe — The Bermuda-based company said Sandy-related losses could cut its 2102 fourth-quarter income by around $130 million.Tokio Marine Group — The company announced an estimated hit of $258 million to earnings for its overseas insurance business, mainly due to Sandy.Tower Group Cos. — The company said Sandy-related net losses are estimated at between $55 million and $68 million. Tower Group said industry loss warrants would pay $10 million if industry losses top $10 billion, and another $10 million if they exceed $15 billion.Validus Holdings Ltd — The Bermuda-based reinsurer’s estimate of losses is $331 million, net of reinstatement premiums and reinsurance, retrocessional and other recoveries.XL Group plc — The company’s loss estimate is around $350 million, pretax and net of reinsurance and reinstatement premiums. Some 60 percent of the losses come from the reinsurance segment.Zurich Insurance — The company expects claims net of reinsurance of about $700 million.