Sadly the world is less certain and less safe. But our sense of responsibility has not changed.  The Royal Navy may be smaller than in the past but has a strong future so this is no time to talk the Navy down.

The Royal Navy does have challenges, in people, budgets and equipment, but these must be put in perspective. The Royal Navy’s challenges are those of a first-rate Navy. You don’t hear about the same issues in many other navies – and believe me, they exist - because they don’t operate with the same sophistication or expectation.

The Type 45 destroyer is a case in point. It is a hugely innovative ship, and the propulsion systems have turned out to be less reliable than originally envisaged.  Money is now in place to put this right, but what is beyond doubt is that these ships offer one of the best anti-aircraft capabilities in the world.

If they weren’t up to the job then the US and French navies would not entrust them with protection of their aircraft carriers in the Gulf.

The UK, like any developed economy, has to control public spending. Difficult decisions had to be taken to balance the books and retiring the Harpoon missile system was one.

That weapon was reaching the end of its life, which is why we are exploring the advanced technologies that will take its place. Last month the Royal Navy held the largest international gathering of autonomous systems ever staged, and we will shortly trial both an energy weapon and artificial intelligence at sea. These are the technologies that will maintain our superiority over more conventional navies.

We must also ensure that the focus on our current challenges does not obscure the scale of investment which is currently taking place or its significance for the UK’s place in the world. With last month’s cutting of steel for the future HMS Dreadnought, the renewal of the nuclear deterrent has begun, but it’s the impending arrival of the Queen Elizabeth-class aircraft carriers, and their air group of fifth generation fighters, that really mark the beginning of a new era.

If you need a further reminder of the practical and symbolic power coming our way, consider the international significance attached to the recent deployment of the Russian carrier Kuznetsov and her battle group to the Mediterranean.

When the French carrier Charles De Gaulle enters refit at the beginning of next year, Western Europe will be left without a large aircraft carrier for operations, which again highlights the strategic value that two carriers flying the White Ensign will bring to our nation, and our partnerships, in the decades ahead.

Backed by a commitment to meeting NATO’s requirement to spend 2% of GDP on Defence, last year’s Defence Review mandated the necessary supporting components in place to ensure a balanced Fleet, including new F35B Joint Strike Fighters, Type 26 frigates, Maritime Patrol Aircraft and Royal Fleet Auxiliary ships.

Crucially, the Government has repeatedly stated its ambition to grow the size of the Royal Navy by the 2030s through the construction of a new class of General Purpose frigate. This will be a complex warship, able to protect and defend and to exert influence around the world, but deliberately shaped with lessons from industry to make it more exportable to our international partners.

This is hugely significant. For most of my 38 year career, the story of the Royal Navy has been one of gradual, managed contraction. Now, at long last, we have an opportunity to reverse this trend, rebuilding in particular resilience in our destroyer and frigate numbers, the backbone of a fighting Navy.

This would also permit a more frequent presence in parts of the world in which we have been spread thin in recent years in order to support the UK’s growing global economic ambitions.

So, rest assured, I intend to work with the Government in the coming months and years to deliver their ambition for a larger Navy. Only this will ensure the Royal Navy can continue to deter our enemies, protect our people and promote our prosperity in these uncertain times.