b'You must include detailed engineering analysis withProve modifications are not possible without com-FOGHORN FOCUS all engines within a range of applicable power ratings/ promising the vessels structural integrity or stability.densities and other powertrain modifications(controls, propulsors, ratios and drivetrainProve your inability to financially replace theconfigurations). vessel with a compliant vessel.If engines are available by the compliance date, then Prove that a repower is not technically feasible withthis extension would apply to the DPF only if no unitsany engine meeting the vessels performance require-have been verified for the subject engines. ments and provide proof of those requirements.E3: Feasibility Extension, engine or DPF, is not feasi-Prove that no verified DPF can be retrofitted toble and the owner cannot afford to replace the vessel. your Tier 3 or 4 engines installed on your vessel. Two-year extension that is renewable within a specific Repowering that results in a passenger capacitytime window, subsection c, for the compliance dates inreduction of 25 percent or more of your current (e)(12) Coast Guard COI are considered not feasible.Y E4: Feasibility Extension, Tier 4 engines with limited ou must prove that no compliant engine and/or DPF can physically fit in the vessel and have that approved by the EO. operating hours per Table 20 on page 88TABLE 18Compliance Dates for Tier 2, Tier 3, or Tier 4Engines on Research vessels, Commercial Passenger Fishing Vessels, and In-use Excursion VesselsENGINE MODEL YEARCOMPLIANCE DATE2010 and Earlier12/31/20262011-201212/31/20272013201412/31/20282015201712/31/20292018 and Later12/31/2030[Note: For example, for a 2015 model year diesel engine on a research vessel and operating in Regulated California Waters, the owner or operator must bring the engine into compliance with the requirements of subsection (e)(12)(C) by December 31, 2029]FOGHORN 32'