Quotulatiousness

August 17, 2019

The “remarkably worthless” Sea Sparrow missile launchers on RCN Iroquois-class destroyers

Filed under: Cancon, History, Military, Weapons — Tags: , , , — Nicholas @ 05:00

Earlier this week, Tyler Rogoway posted a fascinating article about one of the original weapon systems installed on Royal Canadian Navy Iroquois-class destroyers. It was developed specifically for this class, and was eventually replaced with modern Mark 41 Vertical Launch Systems during the ships’ mid-life modernization refits:

Image posted to the Reddit r/WarshipPorn subreddit by u/Admhawk.

From manually aimed box launchers, to automated ones like the Mk29 still in use today, to vertical launch variants, the Sea Sparrow was adapted for many different launching methods. Yet the strangest had to the one found on Canada’s Iroquois class. About seven years ago, someone who had worked with RIM-7s on U.S. Navy vessels told me about how nuts the Canadian launch system was that he had seen demonstrated in the late 1980s. In fact, he said it was so clumsy and slow reacting, that it largely defeated the main purpose of the missile system, at least in a multitude of circumstances. “Remarkably worthless” was the way he described it. I had long forgotten about this exchange until recently when pictures of this exact system popped up on the always lively Reddit page r/Warshipporn. At first, when I saw the images I was flabbergasted as to how weird the setup was, then the memory of the conversation hit me. This is what my contact was talking about!

Four Iroquois-class destroyers were commissioned between 1972 and 1973 and all served until 2005, with the last example being retired two years ago, in 2017. They featured the MKIII Sea Sparrow system fitted inside their forward deckhouse, with doors that opened up on each side and overhead swing-arm launchers carrying four missiles each (eight in total, four on each side) that extended out from their garage-like enclosure that hung out off the side of the ship strangely when at the ready. The whole arrangement looks like something far from conducive to high sea state, not to mention rocket blast from the missiles, or a combat environment, for that matter. 32 missiles were carried in all, with twelve at the ready on each side, but reloading the system as a whole was a slow process.

In addition, it’s said that the Hollandse Signaal Mk22 Weapon Control System wasn’t really up to the task and just deploying the missiles and warming up their guidance systems could take minutes or longer. All of this is far from ideal for what is supposed to have been a fast-reacting point defense system capable of quickly fending off sea-skimming anti-ship missiles that arrive with little warning from over the horizon.

HMCS Iroquois (DDG 280) at Port of Hamburg, near Övelgönne, after mid-life refit replaced the Sea Sparrow launchers (via Wikimedia Commons)

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