Revenues

The revenues as of December 31, 2020, 2019 and 2018, are summarized as follows:

	2020		2019		2018
Maritime
Parcel tankers	$	340,767	$	287,140	$	312,305
Maritime administration services		131,136		159,772		187,426
Shipyard		100,864		164,917		138,517
Bulk carrier		85,085		162,897		144,664
Tugboats		-		81,707		70,037
Offshore vessels		93,373		12,072		56,506

Ports and terminals
Port services		41,659		90,144		101,688
Shipping agencies		27,530		79,695		64,283

Logistics, warehousing and other businesses
Repair of containers		196,584		211,171		234,534
Warehousing		139,042		171,867		160,991
Intermodal terminal		41,794		49,157		47,581
Automotive services		5,447		5,144		4,534
Total consolidated revenue	$	1,203,281	$	1,475,683	$	1,523,066

The Company’s revenues do not show any particular grouping characteristic, such as by type of customer (government and private), geographic zone, etc. The main grouping is shown based on the type of revenue for each segment. Moreover, as discussed in Note 4.18, all of the Company’s revenues are recognized over time.