Naval Historywith Dr. Alex

Q&A · 2:15:59-2:16:56

What the Supermarine Sea Otter improved

The Sea Otter was essentially an improved Walrus whose stronger Bristol Mercury engine increased speed, range, and operating efficiency.

Bristol MercuryFlying BoatsRoyal NavySupermarine Sea OtterSupermarine Walrus
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Question

Was the Supermarine Sea Otter significantly better than the Walrus?

Short answer

It was an improved Walrus, chiefly gaining a more powerful Bristol Mercury engine and better speed, range, and efficiency.

Notes

The Supermarine Sea Otter was an evolutionary successor rather than a wholly different concept. Its Bristol Mercury engine provided substantially more takeoff power than the Walrus installation. The extra power improved speed, range, and practical operating efficiency while retaining the useful amphibious arrangement. The Royal Navy improved a reliable type instead of discarding a proven operational formula.