Your policy says where you may go

What a navigation warranty actually is

The word warranty is doing the work. In marine insurance a warranty is a promise about how the vessel will be used, not a description of what is covered, and breaking a promise and falling outside a definition are different events with different consequences.

Navigational limits (cruising area)

The geographic area within which the policy responds. Written into the policy itself rather than implied by where the vessel is kept, which is why a boat berthed comfortably inside its limits can still be taken outside them on a Saturday.

Navigation warranty

The limits expressed as a promise by the assured. What a breach does is governed by the wording and by the law the policy is subject to — which is exactly why the wording is worth reading rather than paraphrasing.

Held covered

A provision in some marine wordings under which cover continues, or is reinstated, where limits are exceeded — provided prompt notice is given and any additional premium is agreed. It is a clause you can only rely on if you made the call.

Named-storm or hurricane clause

A seasonal restriction on where the vessel may be during a defined window of dates. Distinct from a named-storm deductible, which changes what you pay on a storm loss rather than where you may be.

Named-storm plan

What you undertake to physically do once a storm is named or a warning is issued for your area — haul out, move to a stated refuge, strip windage, double lines. An obligation, not a suggestion, and one written to be performed before the weather arrives.

The shapes the clause takes

Limits are drawn in a handful of recognisable ways. Working out which shape yours is takes a minute and tells you immediately where the exposure sits in your own season.

Named storms: three clauses, often confused

In storm-exposed regions a policy commonly carries more than one storm provision, and they do completely different jobs. Reading one and assuming you have read them all is the usual mistake.

• A geographic seasonal restriction. The policy names an area and a window of dates — often drawn as a box on a chart between stated latitudes and longitudes — and the vessel is expected to be outside it, or inside a named refuge, during that window.
• A named-storm deductible. A separate and usually larger deductible that applies to losses caused by a storm that has been named. What triggers it, and for how long after the storm it keeps applying, is wording rather than common sense.
• A named-storm or hurricane plan. What you undertake to do once a watch or warning is issued for your area: haul out, move to a stated location, remove canvas and other windage, double lines and add chafe protection, sometimes within a stated period of the warning.

The plan is the one worth rehearsing while the weather is calm, because it assumes resources that are finite exactly when everybody wants them. Haul-out slots at a yard are allocated by contract and by who called first; a refuge that is a two-hour run in June is a different proposition with a forecast behind it. If your plan requires a yard, confirm you have a place in it now. If it requires a passage, be honest about whether you would actually make it.

• Ask what triggers the plan — a named storm, a watch, a warning — and who makes that call.
• Ask whether haul-out is required or merely permitted, and what happens if the yard cannot take you.
• Ask whether the policy contributes toward the cost of hauling and tying down. Many do; the amount and the conditions are stated in the clause, so ask for the figure in writing rather than assuming there is one.
• Ask how the named-storm deductible is calculated at your insured value, in dollars.
• Ask what evidence the carrier expects afterwards that the plan was followed.

Check it yourselfStorm boundaries, seasonal dates, deductible triggers and the period allowed to act are all written individually into individual policies and differ between carriers covering the same waters. No figure here would be true of your policy — the clause on your own document is the authority, and your broker can send the form.

What crossing the line actually does

The honest answer is that it depends on the wording, and the possibilities are different enough to matter:

• Cover suspended while outside, restored on return. A loss that happens beyond the limit is uninsured; a loss after the vessel is back inside is covered as normal.
• Breach of a warranty. Depending on the form and the law the policy is subject to, the consequences can reach beyond the trip — and can apply whether or not the breach had anything to do with the loss.
• Held covered, subject to notice and additional premium. Cover continues where the wording provides for it, but only on the terms the clause sets, and notice is one of them.

Notice is the through-line. In every version of the clause, the owner who telephoned before leaving is in a completely different position from the one who telephoned afterwards, and the call is free.

It is also worth remembering what else rides on the same policy. Hull damage is the loss owners picture, but liability, salvage, towing, wreck removal and pollution exposure sit on the same contract and respond to the same conditions. Being outside the limits during an incident involving another vessel is a much larger problem than a repair bill.

Getting the limits extended

This is ordinary, unremarkable business for a marine underwriter, and it is nearly always easier than owners expect. The sequence matters more than the argument.

1. 1

   Plan the whole season on a chart, delivery legs included

   The trip that breaks the limits is usually the trip to the trip. Lay out every passage you intend to make, including the one to the yard at the end of the season.
2. 2

   Ask your broker for the exact wording

   Not the summary on the declarations page and not a description over the phone. You want the clause, with its stated distances, places and dates.
3. 3

   Ask what an extension would need

   An underwriter looking at an extension typically wants the itinerary and dates, who is aboard and their experience, sometimes a current survey, sometimes a delivery captain, and sometimes a different deductible for the passage.
4. 4

   Get the endorsement in writing before you leave

   Then read the endorsement itself rather than the covering email, and check that the dates on it match the dates you actually intend to sail.
5. 5

   Tell the broker if the plan changes

   An extension is priced against an itinerary. A weather delay that pushes you a week past the endorsed dates is a phone call, not a judgement call.
6. 6

   Check what the extension did to everything else

   An extension can interact with the storm clause, the lay-up dates and the deductible structure. Ask which of those moved, and confirm the answer on the document.

The single-trip case

Most owners break their limits once a year, for one identifiable passage. Where that is true, a trip-specific extension is usually the cheaper and cleaner answer than carrying wider limits all year for a fortnight of use — and it puts the underwriter in the picture on the one occasion when the risk genuinely changes. Wider limits bought permanently for an occasional trip is exposure you are paying for every month.

Why this shows up on a renewal

Limits can narrow at renewal with barely a movement on the premium line: a region redrawn after a storm season, a seasonal boundary date moved, a named-storm clause added where there was none. None of that announces itself. It is found by putting this year’s declarations page next to last year’s and reading the clauses rather than the total — the same method set out in comparing a renewal against last year’s declarations page.

Where the limits sit among the other things that move a marine price is in why your boat or yacht insurance went up. The two clauses that most often travel with a change to your cruising area are the lay-up dates — because place and time describe one season between them — and the settlement basis, which decides what any of it pays. A new cruising area is also one of the events that triggers a fresh marine survey.

Common questions