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Background  —  CF   LAV  TUA  ( TOW - Under - Armour )  Project

LAV III TUA  – Wheeled TOW-Under-Armour
When DND's procurement plans for the LAV III were slashed in half in the mid-1990s, among the cuts to a  proposed family of  vehicles based on this next-generation LAV was a replacement  for M113 TUAs, the CF's tracked APC-based TOW missile launchers. This wheeled TUA was never cancelled. It was simply a matter of funding the necessary vehicles (the recycled Kvaerner TUA turrets [1] would simply swap onto new chassis. So, what had suddenly made funding available?

Moving in Mixed Company:  Is TUA  Better Than One ?
DND's  decision  to buy the  Mobile Gun System (MGS) got the LAV TUA out of  the deep-freeze  (the three-part direct-fire support plan was to mix TUA with gun-armed MGS and the 'Multi-Mission Effects Vehicle' (also LAV III-based) firing a dual-purpose ADATS[2] missile (both ADATS and TOW being proven missiles). Compared with the original TUA,  LAV TUA performance would  be improved with better target acquisition and  two new, upgraded missile types – extended-range TOW Aero and TOW Bunker Buster. [3]

The CF intended to field 71 new TUAs.[4] Familiarization train- ing began in March 2006, E Coy LdSH(RC) began revieving its first of  18 vehicles in April for ' Initial Product Testing ' at CFB Wainwright. This was essentially conversion training from the tracked TUA. RAMD (Reliability, Availability, Maintainability, and Durability) testing followed "with emphasis on monitoring TUA weapon, surveillance and command and control compon- ent integration and functionality".  Crews also had to get used to substantially taller vehicle[5], albeit also a more reliable one.

Testing is complete but questions remain about  this one leg of a planned tripod. LAV TUA will be useful in all the ways that its tracked predecessor were (perhaps more so with its superior roadability). But how useful is the TOW missile when there is no armour threat  (as in Kandahar)? Bunker Busters are an expensive way to "mousehole" if HESH tank rounds are available. The LAV TUA will find its place in the future. But a gap in direct fire support has been filled by Leopard 2A6Ms. Now 33 surplus LAV TUAs will become LAV-RWS ISCs.

[1] Swapping the Kvaerner Eureka turrets from the tracked M113 to the wheeled LAV III chassis is not that difficult. However, the system is also being upgraded with the addition of the Improved Target Acquisition System. As its name suggests,  ITAS is intended to improve field performance.  ITAS includes an improved Fire Control Subsystem allowing the use of all existing  (and future) TOW missile variants.
[2] Like LAV TUA, the MMEV concept involved 'recycling' turrets from M113 chassis (in this case, Oerlikon Contraves ADATS, the dual purpose Air Defence/Anti-Tank System). MMEV was to enter service in 2010 but Land Staff recommended its cancellation in July of 2006.
[3] TOW 2B Aero has a maximum range of 4.5km  (0.75km more than a standard TOW 2B). The Bunker Buster is based on the earlier TOW 2A variant which has a 3.75km range.  LAV TUA tests included firing the two new missile types at the US Army  Redstone Arsenal range.
[4] Only 38 of  the 71 LAV TUA conversions were completed as such, the remaining 31 hulls became LAV-RWS  Infantry Section Carriers.
[5] The turret top is 4.25m off the ground. This takes some getting used by the crews, but it is also a tactical consideration  –  finding hull- down positions will be a bigger challenge).  As for added reliability, note that  the TLAV rebuilds did not include original  TUA M113A2s.