To Keep its reputation as one of the world's best airlines, Singapore Airlines has always emphasized its premium offerings for both soft and hard products. Concerning the latter, the Singaporean flag carrier is well-known for having fantastic passenger cabins - from the airline's iconic Suites to the many variations of business class cabins.

Singapore Airlines currently offers a few different business class seats across its fleet of nearly 150 aircraft, from the smallest Boeing 737-800 to the massive Airbus A380 and everything in between. With such a variety, here are the aircraft that feature the five largest business class cabins.

1 Airbus A380

It probably comes as no surprise, considering the Airbus A380 is the biggest aircraft in the Singapore Airlines fleet and the largest passenger airliner in operation. Retrofitted with 78 business class seats on the top deck, which transform into fully-flat beds, the currently-active superjumbos offer 50 seats in the forward cabin with 12 rows of four seats in a 1-2-1 configuration plus an extra 2 (no D and F in row 24). Then there's the second cabin with five rows of four seats to house 20 seats, and the back cabin housing eight seats across two rows, all in the same configuration.

Photo: Singapore Airlines

2 Airbus A350 Ultra-Long-Range

Although Singapore Airlines is the world's most prominent Airbus A350 operator, with over 60 in the fleet, the Star Alliance member has them in three variations according to their ranges and usage. As the chosen aircraft deployed for the world's longest non-stop routes, the Airbus A350ULR houses the second-biggest business class cabin with 67 seats.

With a significantly wider fully-flat bed compared to the seats on the other Airbus A350 versions, these business class seats are configured in a 1-2-1 layout, where every passenger has direct aisle access regardless of a window or center position. One seat is wide enough to adequately fit two averagely-sized people sitting side by side for activities like watching a movie together.

3 Boeing 777-300ER

Next on this list is the airline's Boeing 777-300ERs, which boast a modest 48 business class seats occupying the rear three rows in the forward cabin section, plus the entire second section between the aircraft's second and third main doors. These business class seats mirror those on the Airbus A350ULR, meaning passengers will experience the same 1-2-1 configuration with spaciously wide, fully-flat bed seats.

Photo: Singapore Airlines

4 Airbus A350 Long-Haul

Also known as the Airbus A350-900 standard version, this aircraft sports slightly fewer business class seats than the Boeing 777-300ERs, with only 42 in the cabin. Again, configured in a 1-2-1 layout, 26 roomy fully-flat beds are fitted in the forward section between the aircraft's main doors one and two, while the remaining 16 are just behind door two.

5 Airbus A350 Medium-Haul

The last variation of the Singapore Airlines Airbus A350 fleet closes up this list with 40 business class seats in the cabin. All of these fully-flat beds will mirror those found on the flag carrier's Boeing 787-10 Dreamliner fleet. However, across the three different Airbus A350 versions, the business class seats on the medium-haul versions were trimmed down and are the narrowest and shortest - an often noticeable difference from those featured on the standard and ultra-long-haul versions.

Photo: Singapore Airlines

If the list continued, the Boeing 787-10 would follow behind with 36 business class seats, then the Boeing 737-800 with 12. Last but not least, the airline's Boeing 737 MAX 8s feature ten business class seats. Of these remaining three aircraft types, only the Boeing 737-800 does not feature fully flat-bed business class seats.

Have you flown business class with Singapore Airlines before? Share your experience with us in the comments below.

Sources: ch-aviation, Singapore Airlines