Ananda
The Bunker Group
Exactly, it will be cheaper to maintain and operate than M Class, still have more room to upgrade (if you got budget on that), relatively younger years toward other potentially second hand Frigates, and in my opinion this is matter more for Indonesian Naval need, they provide good Economics range for patrol duty.The two spare ships, Surcouf & Guépratte, are a few years newer than the remaining Dutch M-class, & the design is newer, but they're slower & have a more basic sensor fit. The all-diesel propulsion should be easier to maintain & cheaper to operate than the CODAG M-class.
Despite all the plan for newly build Frigates, Indonesian Navy will not be able to catch up with the replacement need only by that, let alone to venture on growth plan. Combination of newly build and second hand assets need to be done in my calculations. Also there will be not enough budget, if all the replacement and growth plan will be done by newly build assets. Thus this is in the end back to question of Budget and Time Table.
The pressing need right now is to replace those Old Van Speijk Frigates. Despite all the upgrade being done to them, they are already old and tired hulls. They should be replaced during this Administration first term. However incompetence MinDef planning during first term, plus no clear goal set on defense planning, makes those hulls has to soldiers on when they should be scrap few years back.
Thus even only doing minimal upgrade (can be say as first stage upgrade), upgrade sensors suit while still using armament from those Van Speijk like 76mm gun, Mistral, or even the Chinese Missiles (that being put when the original Harpoon already pass expiration date), still will be acceptable for Patrol duties.
Off course the ideal way is to improve sensors both for AAW, ASuW, and ASW. Standardize the SSM with Exocet 40 Blk3 (just like in the Sigma's and Bung Tomo Corvettes), and install VLS for VL MICA. However if the budget is not enough for complete overhaul, they can do it on stages.
Well all this back to that MOI that sign by both Indonesia and French defense Minister. They have not reach final stage yet, still no information when even Surcouf & Guépratte will be available for Transfer. However if it meet both the budget and time table, it should be still worth it program.