Mastera in Blohm & Voss drydock, Hamburg, 07.10.2007.

Mastera has got two special features:
1. She's got two identical bridges, one aft and one ahead.
2. She's got no rudder.
She's used in the Baltic Sea between Finland and Russia.
Her azipod, which actually also is the rudder allows her to act as an icebreaker if necessary. If the ice gets to thick she turns around and goes stern ahead, the azipod breaking the ice. Thus the second bridge aft.

Type: Crude oil tanker
Built by Sumitomo Heavy Industries, Yokosuka Ship Yard, Yokosuka, Japan
Yard No.: 1286
Completed: 08.01.2003
Port of registry: Porvoo, Finland
Call sign: OJKE

Gt/Nt/Dwt: 64.259 / 30.846 / 106.208
L/B/D (m): 252,00 / 44,00 / 15,34
Speed: 15,10 knots

Owner: Neste Oil Corporation, Espoo, Finland
Registered owner: SEB Leasing OY, Espoo, Finland
Manager & operator: Neste Shipping OY, Espoo, Finland